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Finding the Fourth Proportional to 321,775.40, 482,818.92 and 132,375.73

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Solution

The fourth proportional to 321,775.40, 482,818.92 and 132,375.73 is: 198,627.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,775.40 : 482,818.92 = 132,375.73 : x
  2. Step 2: Convert to fraction form
    321,775.40/482,818.92 = 132,375.73/x
  3. Step 3: Cross multiply
    321,775.40x = 482,818.92 × 132,375.73
  4. Step 4: Simplify right side
    321,775.40x = 63,913,506,992.81
  5. Step 5: Solve for x
    x = 63,913,506,992.81/321,775.40
  6. Step 6: Final answer
    x = 198,627.70

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1.5x scale

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.