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Finding the Fourth Proportional to 143,458.57, 215,141.29 and 47,374.17

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Solution

The fourth proportional to 143,458.57, 215,141.29 and 47,374.17 is: 71,045.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,458.57 : 215,141.29 = 47,374.17 : x
  2. Step 2: Convert to fraction form
    143,458.57/215,141.29 = 47,374.17/x
  3. Step 3: Cross multiply
    143,458.57x = 215,141.29 × 47,374.17
  4. Step 4: Simplify right side
    143,458.57x = 10,192,140,046.48
  5. Step 5: Solve for x
    x = 10,192,140,046.48/143,458.57
  6. Step 6: Final answer
    x = 71,045.88

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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.