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Finding the Fourth Proportional to 542,171.53, 813,187.90 and 142,843.15

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Solution

The fourth proportional to 542,171.53, 813,187.90 and 142,843.15 is: 214,246.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,171.53 : 813,187.90 = 142,843.15 : x
  2. Step 2: Convert to fraction form
    542,171.53/813,187.90 = 142,843.15/x
  3. Step 3: Cross multiply
    542,171.53x = 813,187.90 × 142,843.15
  4. Step 4: Simplify right side
    542,171.53x = 116,158,321,177.89
  5. Step 5: Solve for x
    x = 116,158,321,177.89/542,171.53
  6. Step 6: Final answer
    x = 214,246.44

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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.