Home / 387,414.64-534,619.82-215,331.76

Finding the Fourth Proportional to 387,414.64, 534,619.82 and 215,331.76

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Solution

The fourth proportional to 387,414.64, 534,619.82 and 215,331.76 is: 297,150.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,414.64 : 534,619.82 = 215,331.76 : x
  2. Step 2: Convert to fraction form
    387,414.64/534,619.82 = 215,331.76/x
  3. Step 3: Cross multiply
    387,414.64x = 534,619.82 × 215,331.76
  4. Step 4: Simplify right side
    387,414.64x = 115,120,626,771.48
  5. Step 5: Solve for x
    x = 115,120,626,771.48/387,414.64
  6. Step 6: Final answer
    x = 297,150.95

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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.