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Finding the Fourth Proportional to 316,487.98, 436,753.38 and 173,248.12

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Solution

The fourth proportional to 316,487.98, 436,753.38 and 173,248.12 is: 239,082.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,487.98 : 436,753.38 = 173,248.12 : x
  2. Step 2: Convert to fraction form
    316,487.98/436,753.38 = 173,248.12/x
  3. Step 3: Cross multiply
    316,487.98x = 436,753.38 × 173,248.12
  4. Step 4: Simplify right side
    316,487.98x = 75,666,701,988.65
  5. Step 5: Solve for x
    x = 75,666,701,988.65/316,487.98
  6. Step 6: Final answer
    x = 239,082.39

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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.