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Finding the Fourth Proportional to 372,190.40, 558,340.96 and 172,530.97

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Solution

The fourth proportional to 372,190.40, 558,340.96 and 172,530.97 is: 258,822.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,190.40 : 558,340.96 = 172,530.97 : x
  2. Step 2: Convert to fraction form
    372,190.40/558,340.96 = 172,530.97/x
  3. Step 3: Cross multiply
    372,190.40x = 558,340.96 × 172,530.97
  4. Step 4: Simplify right side
    372,190.40x = 96,331,105,592.35
  5. Step 5: Solve for x
    x = 96,331,105,592.35/372,190.40
  6. Step 6: Final answer
    x = 258,822.12

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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.