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Finding the Fourth Proportional to 143,878.86, 215,818.38 and 38,708.46

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Solution

The fourth proportional to 143,878.86, 215,818.38 and 38,708.46 is: 58,062.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,878.86 : 215,818.38 = 38,708.46 : x
  2. Step 2: Convert to fraction form
    143,878.86/215,818.38 = 38,708.46/x
  3. Step 3: Cross multiply
    143,878.86x = 215,818.38 × 38,708.46
  4. Step 4: Simplify right side
    143,878.86x = 8,353,997,129.49
  5. Step 5: Solve for x
    x = 8,353,997,129.49/143,878.86
  6. Step 6: Final answer
    x = 58,062.71

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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.