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Finding the Fourth Proportional to 289,245.88, 433,702.71 and 154,143.62

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Solution

The fourth proportional to 289,245.88, 433,702.71 and 154,143.62 is: 231,126.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,245.88 : 433,702.71 = 154,143.62 : x
  2. Step 2: Convert to fraction form
    289,245.88/433,702.71 = 154,143.62/x
  3. Step 3: Cross multiply
    289,245.88x = 433,702.71 × 154,143.62
  4. Step 4: Simplify right side
    289,245.88x = 66,852,505,181.08
  5. Step 5: Solve for x
    x = 66,852,505,181.08/289,245.88
  6. Step 6: Final answer
    x = 231,126.90

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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.