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Finding the Fourth Proportional to 321,742.40, 482,613.60 and 237,761.60

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Solution

The fourth proportional to 321,742.40, 482,613.60 and 237,761.60 is: 356,642.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,742.40 : 482,613.60 = 237,761.60 : x
  2. Step 2: Convert to fraction form
    321,742.40/482,613.60 = 237,761.60/x
  3. Step 3: Cross multiply
    321,742.40x = 482,613.60 × 237,761.60
  4. Step 4: Simplify right side
    321,742.40x = 114,746,981,717.76
  5. Step 5: Solve for x
    x = 114,746,981,717.76/321,742.40
  6. Step 6: Final answer
    x = 356,642.40

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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.