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Finding the Fourth Proportional to 531,531.72, 733,691.52 and 316,739.16

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Solution

The fourth proportional to 531,531.72, 733,691.52 and 316,739.16 is: 437,205.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,531.72 : 733,691.52 = 316,739.16 : x
  2. Step 2: Convert to fraction form
    531,531.72/733,691.52 = 316,739.16/x
  3. Step 3: Cross multiply
    531,531.72x = 733,691.52 × 316,739.16
  4. Step 4: Simplify right side
    531,531.72x = 232,388,835,743.92
  5. Step 5: Solve for x
    x = 232,388,835,743.92/531,531.72
  6. Step 6: Final answer
    x = 437,205.96

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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.