Home / 372,581.08-558,434.21-172,478.78

Finding the Fourth Proportional to 372,581.08, 558,434.21 and 172,478.78

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Solution

The fourth proportional to 372,581.08, 558,434.21 and 172,478.78 is: 258,515.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,581.08 : 558,434.21 = 172,478.78 : x
  2. Step 2: Convert to fraction form
    372,581.08/558,434.21 = 172,478.78/x
  3. Step 3: Cross multiply
    372,581.08x = 558,434.21 × 172,478.78
  4. Step 4: Simplify right side
    372,581.08x = 96,318,051,251.06
  5. Step 5: Solve for x
    x = 96,318,051,251.06/372,581.08
  6. Step 6: Final answer
    x = 258,515.68

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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.