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Finding the Fourth Proportional to 372,191.40, 558,125.10 and 172,445.40

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Solution

The fourth proportional to 372,191.40, 558,125.10 and 172,445.40 is: 258,593.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,191.40 : 558,125.10 = 172,445.40 : x
  2. Step 2: Convert to fraction form
    372,191.40/558,125.10 = 172,445.40/x
  3. Step 3: Cross multiply
    372,191.40x = 558,125.10 × 172,445.40
  4. Step 4: Simplify right side
    372,191.40x = 96,246,106,119.54
  5. Step 5: Solve for x
    x = 96,246,106,119.54/372,191.40
  6. Step 6: Final answer
    x = 258,593.04

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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.