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Finding the Fourth Proportional to 418,281.11, 627,327.44 and 118,755.53

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Solution

The fourth proportional to 418,281.11, 627,327.44 and 118,755.53 is: 178,106.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,281.11 : 627,327.44 = 118,755.53 : x
  2. Step 2: Convert to fraction form
    418,281.11/627,327.44 = 118,755.53/x
  3. Step 3: Cross multiply
    418,281.11x = 627,327.44 × 118,755.53
  4. Step 4: Simplify right side
    418,281.11x = 74,498,602,026.97
  5. Step 5: Solve for x
    x = 74,498,602,026.97/418,281.11
  6. Step 6: Final answer
    x = 178,106.54

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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.