Home / 387,128.22-534,251.92-215,059.21

Finding the Fourth Proportional to 387,128.22, 534,251.92 and 215,059.21

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Solution

The fourth proportional to 387,128.22, 534,251.92 and 215,059.21 is: 296,790.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,128.22 : 534,251.92 = 215,059.21 : x
  2. Step 2: Convert to fraction form
    387,128.22/534,251.92 = 215,059.21/x
  3. Step 3: Cross multiply
    387,128.22x = 534,251.92 × 215,059.21
  4. Step 4: Simplify right side
    387,128.22x = 114,895,798,596.24
  5. Step 5: Solve for x
    x = 114,895,798,596.24/387,128.22
  6. Step 6: Final answer
    x = 296,790.04

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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.