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Finding the Fourth Proportional to 372,391.38, 558,149.64 and 172,289.13

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Solution

The fourth proportional to 372,391.38, 558,149.64 and 172,289.13 is: 258,231.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,391.38 : 558,149.64 = 172,289.13 : x
  2. Step 2: Convert to fraction form
    372,391.38/558,149.64 = 172,289.13/x
  3. Step 3: Cross multiply
    372,391.38x = 558,149.64 × 172,289.13
  4. Step 4: Simplify right side
    372,391.38x = 96,163,115,885.41
  5. Step 5: Solve for x
    x = 96,163,115,885.41/372,391.38
  6. Step 6: Final answer
    x = 258,231.32

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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.