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Finding the Fourth Proportional to 247,067.67, 340,989.92 and 156,432.05

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Solution

The fourth proportional to 247,067.67, 340,989.92 and 156,432.05 is: 215,899.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,067.67 : 340,989.92 = 156,432.05 : x
  2. Step 2: Convert to fraction form
    247,067.67/340,989.92 = 156,432.05/x
  3. Step 3: Cross multiply
    247,067.67x = 340,989.92 × 156,432.05
  4. Step 4: Simplify right side
    247,067.67x = 53,341,752,214.94
  5. Step 5: Solve for x
    x = 53,341,752,214.94/247,067.67
  6. Step 6: Final answer
    x = 215,899.36

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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.