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Finding the Fourth Proportional to 548,153.02, 756,456.76 and 306,449.02

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Solution

The fourth proportional to 548,153.02, 756,456.76 and 306,449.02 is: 422,902.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,153.02 : 756,456.76 = 306,449.02 : x
  2. Step 2: Convert to fraction form
    548,153.02/756,456.76 = 306,449.02/x
  3. Step 3: Cross multiply
    548,153.02x = 756,456.76 × 306,449.02
  4. Step 4: Simplify right side
    548,153.02x = 231,815,432,774.38
  5. Step 5: Solve for x
    x = 231,815,432,774.38/548,153.02
  6. Step 6: Final answer
    x = 422,902.77

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Half scale
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Double scale
Find fourth proportional to 548,154.02, 756,458.14 and 306,450.02
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.