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Finding the Fourth Proportional to 387,524.67, 534,793.23 and 215,447.87

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Solution

The fourth proportional to 387,524.67, 534,793.23 and 215,447.87 is: 297,323.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,524.67 : 534,793.23 = 215,447.87 : x
  2. Step 2: Convert to fraction form
    387,524.67/534,793.23 = 215,447.87/x
  3. Step 3: Cross multiply
    387,524.67x = 534,793.23 × 215,447.87
  4. Step 4: Simplify right side
    387,524.67x = 115,220,059,619.95
  5. Step 5: Solve for x
    x = 115,220,059,619.95/387,524.67
  6. Step 6: Final answer
    x = 297,323.16

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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.