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Finding the Fourth Proportional to 392,379.48, 541,501.50 and 231,241.32

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Solution

The fourth proportional to 392,379.48, 541,501.50 and 231,241.32 is: 319,123.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,379.48 : 541,501.50 = 231,241.32 : x
  2. Step 2: Convert to fraction form
    392,379.48/541,501.50 = 231,241.32/x
  3. Step 3: Cross multiply
    392,379.48x = 541,501.50 × 231,241.32
  4. Step 4: Simplify right side
    392,379.48x = 125,217,521,641.98
  5. Step 5: Solve for x
    x = 125,217,521,641.98/392,379.48
  6. Step 6: Final answer
    x = 319,123.52

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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.