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Finding the Fourth Proportional to 478,772.87, 718,264.33 and 141,839.85

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Solution

The fourth proportional to 478,772.87, 718,264.33 and 141,839.85 is: 212,790.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,772.87 : 718,264.33 = 141,839.85 : x
  2. Step 2: Convert to fraction form
    478,772.87/718,264.33 = 141,839.85/x
  3. Step 3: Cross multiply
    478,772.87x = 718,264.33 × 141,839.85
  4. Step 4: Simplify right side
    478,772.87x = 101,878,503,126.21
  5. Step 5: Solve for x
    x = 101,878,503,126.21/478,772.87
  6. Step 6: Final answer
    x = 212,790.89

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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.