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Finding the Fourth Proportional to 318,781.67, 478,059.95 and 94,082

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Solution

The fourth proportional to 318,781.67, 478,059.95 and 94,082 is: 141,089.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,781.67 : 478,059.95 = 94,082 : x
  2. Step 2: Convert to fraction form
    318,781.67/478,059.95 = 94,082/x
  3. Step 3: Cross multiply
    318,781.67x = 478,059.95 × 94,082
  4. Step 4: Simplify right side
    318,781.67x = 44,976,836,215.90
  5. Step 5: Solve for x
    x = 44,976,836,215.90/318,781.67
  6. Step 6: Final answer
    x = 141,089.78

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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.