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Finding the Fourth Proportional to 318,875.96, 478,372.79 and 131,902.04

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Solution

The fourth proportional to 318,875.96, 478,372.79 and 131,902.04 is: 197,877.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,875.96 : 478,372.79 = 131,902.04 : x
  2. Step 2: Convert to fraction form
    318,875.96/478,372.79 = 131,902.04/x
  3. Step 3: Cross multiply
    318,875.96x = 478,372.79 × 131,902.04
  4. Step 4: Simplify right side
    318,875.96x = 63,098,344,819.38
  5. Step 5: Solve for x
    x = 63,098,344,819.38/318,875.96
  6. Step 6: Final answer
    x = 197,877.40

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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.