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Finding the Fourth Proportional to 317,802.96, 438,575.72 and 172,614.11

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Solution

The fourth proportional to 317,802.96, 438,575.72 and 172,614.11 is: 238,211.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,802.96 : 438,575.72 = 172,614.11 : x
  2. Step 2: Convert to fraction form
    317,802.96/438,575.72 = 172,614.11/x
  3. Step 3: Cross multiply
    317,802.96x = 438,575.72 × 172,614.11
  4. Step 4: Simplify right side
    317,802.96x = 75,704,354,519.46
  5. Step 5: Solve for x
    x = 75,704,354,519.46/317,802.96
  6. Step 6: Final answer
    x = 238,211.61

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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.