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Finding the Fourth Proportional to 247,034.05, 340,909.65 and 145,060.72

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Solution

The fourth proportional to 247,034.05, 340,909.65 and 145,060.72 is: 200,185.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,034.05 : 340,909.65 = 145,060.72 : x
  2. Step 2: Convert to fraction form
    247,034.05/340,909.65 = 145,060.72/x
  3. Step 3: Cross multiply
    247,034.05x = 340,909.65 × 145,060.72
  4. Step 4: Simplify right side
    247,034.05x = 49,452,598,431.67
  5. Step 5: Solve for x
    x = 49,452,598,431.67/247,034.05
  6. Step 6: Final answer
    x = 200,185.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.