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Finding the Fourth Proportional to 478,770.35, 718,260.65 and 141,837.38

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Solution

The fourth proportional to 478,770.35, 718,260.65 and 141,837.38 is: 212,787.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,770.35 : 718,260.65 = 141,837.38 : x
  2. Step 2: Convert to fraction form
    478,770.35/718,260.65 = 141,837.38/x
  3. Step 3: Cross multiply
    478,770.35x = 718,260.65 × 141,837.38
  4. Step 4: Simplify right side
    478,770.35x = 101,876,207,677.97
  5. Step 5: Solve for x
    x = 101,876,207,677.97/478,770.35
  6. Step 6: Final answer
    x = 212,787.21

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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.