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Finding the Fourth Proportional to 247,042.54, 340,909.80 and 139,610.20

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Solution

The fourth proportional to 247,042.54, 340,909.80 and 139,610.20 is: 192,657.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,042.54 : 340,909.80 = 139,610.20 : x
  2. Step 2: Convert to fraction form
    247,042.54/340,909.80 = 139,610.20/x
  3. Step 3: Cross multiply
    247,042.54x = 340,909.80 × 139,610.20
  4. Step 4: Simplify right side
    247,042.54x = 47,594,485,359.96
  5. Step 5: Solve for x
    x = 47,594,485,359.96/247,042.54
  6. Step 6: Final answer
    x = 192,657.04

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1.5x scale

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.