Home / 387,138.86-534,337.02-215,115.93

Finding the Fourth Proportional to 387,138.86, 534,337.02 and 215,115.93

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Solution

The fourth proportional to 387,138.86, 534,337.02 and 215,115.93 is: 296,907.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,138.86 : 534,337.02 = 215,115.93 : x
  2. Step 2: Convert to fraction form
    387,138.86/534,337.02 = 215,115.93/x
  3. Step 3: Cross multiply
    387,138.86x = 534,337.02 × 215,115.93
  4. Step 4: Simplify right side
    387,138.86x = 114,944,404,990.73
  5. Step 5: Solve for x
    x = 114,944,404,990.73/387,138.86
  6. Step 6: Final answer
    x = 296,907.43

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1.5x scale

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.