Home / 387,314.52-534,460.02-215,221.59

Finding the Fourth Proportional to 387,314.52, 534,460.02 and 215,221.59

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Solution

The fourth proportional to 387,314.52, 534,460.02 and 215,221.59 is: 296,986.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,314.52 : 534,460.02 = 215,221.59 : x
  2. Step 2: Convert to fraction form
    387,314.52/534,460.02 = 215,221.59/x
  3. Step 3: Cross multiply
    387,314.52x = 534,460.02 × 215,221.59
  4. Step 4: Simplify right side
    387,314.52x = 115,027,332,623.53
  5. Step 5: Solve for x
    x = 115,027,332,623.53/387,314.52
  6. Step 6: Final answer
    x = 296,986.88

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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.