Home / 391,538.08-587,272.56-142,222.24

Finding the Fourth Proportional to 391,538.08, 587,272.56 and 142,222.24

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Solution

The fourth proportional to 391,538.08, 587,272.56 and 142,222.24 is: 213,320.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,538.08 : 587,272.56 = 142,222.24 : x
  2. Step 2: Convert to fraction form
    391,538.08/587,272.56 = 142,222.24/x
  3. Step 3: Cross multiply
    391,538.08x = 587,272.56 × 142,222.24
  4. Step 4: Simplify right side
    391,538.08x = 83,523,218,973.73
  5. Step 5: Solve for x
    x = 83,523,218,973.73/391,538.08
  6. Step 6: Final answer
    x = 213,320.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.