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Finding the Fourth Proportional to 418,778.49, 627,914.06 and 187,925.15

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Solution

The fourth proportional to 418,778.49, 627,914.06 and 187,925.15 is: 281,773.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,778.49 : 627,914.06 = 187,925.15 : x
  2. Step 2: Convert to fraction form
    418,778.49/627,914.06 = 187,925.15/x
  3. Step 3: Cross multiply
    418,778.49x = 627,914.06 × 187,925.15
  4. Step 4: Simplify right side
    418,778.49x = 118,000,839,833.41
  5. Step 5: Solve for x
    x = 118,000,839,833.41/418,778.49
  6. Step 6: Final answer
    x = 281,773.88

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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.