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Finding the Fourth Proportional to 250,294.53, 345,439.31 and 142,839.93

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Solution

The fourth proportional to 250,294.53, 345,439.31 and 142,839.93 is: 197,137.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,294.53 : 345,439.31 = 142,839.93 : x
  2. Step 2: Convert to fraction form
    250,294.53/345,439.31 = 142,839.93/x
  3. Step 3: Cross multiply
    250,294.53x = 345,439.31 × 142,839.93
  4. Step 4: Simplify right side
    250,294.53x = 49,342,526,145.45
  5. Step 5: Solve for x
    x = 49,342,526,145.45/250,294.53
  6. Step 6: Final answer
    x = 197,137.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.