Home / 387,090.80-534,178.17-215,001.92

Finding the Fourth Proportional to 387,090.80, 534,178.17 and 215,001.92

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Solution

The fourth proportional to 387,090.80, 534,178.17 and 215,001.92 is: 296,698.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,090.80 : 534,178.17 = 215,001.92 : x
  2. Step 2: Convert to fraction form
    387,090.80/534,178.17 = 215,001.92/x
  3. Step 3: Cross multiply
    387,090.80x = 534,178.17 × 215,001.92
  4. Step 4: Simplify right side
    387,090.80x = 114,849,331,400.46
  5. Step 5: Solve for x
    x = 114,849,331,400.46/387,090.80
  6. Step 6: Final answer
    x = 296,698.69

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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.