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Finding the Fourth Proportional to 351,736.52, 527,763.93 and 138,445.70

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Solution

The fourth proportional to 351,736.52, 527,763.93 and 138,445.70 is: 207,731.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,736.52 : 527,763.93 = 138,445.70 : x
  2. Step 2: Convert to fraction form
    351,736.52/527,763.93 = 138,445.70/x
  3. Step 3: Cross multiply
    351,736.52x = 527,763.93 × 138,445.70
  4. Step 4: Simplify right side
    351,736.52x = 73,066,644,084.78
  5. Step 5: Solve for x
    x = 73,066,644,084.78/351,736.52
  6. Step 6: Final answer
    x = 207,731.19

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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.