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Finding the Fourth Proportional to 143,561.47, 215,342.21 and 38,377.70

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Solution

The fourth proportional to 143,561.47, 215,342.21 and 38,377.70 is: 57,566.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,561.47 : 215,342.21 = 38,377.70 : x
  2. Step 2: Convert to fraction form
    143,561.47/215,342.21 = 38,377.70/x
  3. Step 3: Cross multiply
    143,561.47x = 215,342.21 × 38,377.70
  4. Step 4: Simplify right side
    143,561.47x = 8,264,338,732.72
  5. Step 5: Solve for x
    x = 8,264,338,732.72/143,561.47
  6. Step 6: Final answer
    x = 57,566.55

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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.