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Finding the Fourth Proportional to 342,234.95, 513,387.63 and 129,182.32

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Solution

The fourth proportional to 342,234.95, 513,387.63 and 129,182.32 is: 193,786.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,234.95 : 513,387.63 = 129,182.32 : x
  2. Step 2: Convert to fraction form
    342,234.95/513,387.63 = 129,182.32/x
  3. Step 3: Cross multiply
    342,234.95x = 513,387.63 × 129,182.32
  4. Step 4: Simplify right side
    342,234.95x = 66,320,605,102.70
  5. Step 5: Solve for x
    x = 66,320,605,102.70/342,234.95
  6. Step 6: Final answer
    x = 193,786.77

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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.