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Finding the Fourth Proportional to 321,761.60, 482,561.43 and 132,274.81

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Solution

The fourth proportional to 321,761.60, 482,561.43 and 132,274.81 is: 198,378.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,761.60 : 482,561.43 = 132,274.81 : x
  2. Step 2: Convert to fraction form
    321,761.60/482,561.43 = 132,274.81/x
  3. Step 3: Cross multiply
    321,761.60x = 482,561.43 × 132,274.81
  4. Step 4: Simplify right side
    321,761.60x = 63,830,721,466.58
  5. Step 5: Solve for x
    x = 63,830,721,466.58/321,761.60
  6. Step 6: Final answer
    x = 198,378.93

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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.