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Finding the Fourth Proportional to 431,959.41, 648,063.48 and 132,483.92

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Solution

The fourth proportional to 431,959.41, 648,063.48 and 132,483.92 is: 198,764.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,959.41 : 648,063.48 = 132,483.92 : x
  2. Step 2: Convert to fraction form
    431,959.41/648,063.48 = 132,483.92/x
  3. Step 3: Cross multiply
    431,959.41x = 648,063.48 × 132,483.92
  4. Step 4: Simplify right side
    431,959.41x = 85,857,986,998.92
  5. Step 5: Solve for x
    x = 85,857,986,998.92/431,959.41
  6. Step 6: Final answer
    x = 198,764.02

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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.