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Finding the Fourth Proportional to 418,677.78, 628,099.71 and 119,170.14

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Solution

The fourth proportional to 418,677.78, 628,099.71 and 119,170.14 is: 178,778.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,677.78 : 628,099.71 = 119,170.14 : x
  2. Step 2: Convert to fraction form
    418,677.78/628,099.71 = 119,170.14/x
  3. Step 3: Cross multiply
    418,677.78x = 628,099.71 × 119,170.14
  4. Step 4: Simplify right side
    418,677.78x = 74,850,730,374.66
  5. Step 5: Solve for x
    x = 74,850,730,374.66/418,677.78
  6. Step 6: Final answer
    x = 178,778.85

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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.