Home / 387,090.26-534,170.85-217,331.54

Finding the Fourth Proportional to 387,090.26, 534,170.85 and 217,331.54

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Solution

The fourth proportional to 387,090.26, 534,170.85 and 217,331.54 is: 299,909.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,090.26 : 534,170.85 = 217,331.54 : x
  2. Step 2: Convert to fraction form
    387,090.26/534,170.85 = 217,331.54/x
  3. Step 3: Cross multiply
    387,090.26x = 534,170.85 × 217,331.54
  4. Step 4: Simplify right side
    387,090.26x = 116,092,173,453.61
  5. Step 5: Solve for x
    x = 116,092,173,453.61/387,090.26
  6. Step 6: Final answer
    x = 299,909.83

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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.