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Finding the Fourth Proportional to 548,310.20, 822,465.30 and 149,000.45

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Solution

The fourth proportional to 548,310.20, 822,465.30 and 149,000.45 is: 223,500.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,310.20 : 822,465.30 = 149,000.45 : x
  2. Step 2: Convert to fraction form
    548,310.20/822,465.30 = 149,000.45/x
  3. Step 3: Cross multiply
    548,310.20x = 822,465.30 × 149,000.45
  4. Step 4: Simplify right side
    548,310.20x = 122,547,699,809.39
  5. Step 5: Solve for x
    x = 122,547,699,809.39/548,310.20
  6. Step 6: Final answer
    x = 223,500.68

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.