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Finding the Fourth Proportional to 321,775.92, 482,164.56 and 121,988.88

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Solution

The fourth proportional to 321,775.92, 482,164.56 and 121,988.88 is: 182,794.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,775.92 : 482,164.56 = 121,988.88 : x
  2. Step 2: Convert to fraction form
    321,775.92/482,164.56 = 121,988.88/x
  3. Step 3: Cross multiply
    321,775.92x = 482,164.56 × 121,988.88
  4. Step 4: Simplify right side
    321,775.92x = 58,818,714,650.09
  5. Step 5: Solve for x
    x = 58,818,714,650.09/321,775.92
  6. Step 6: Final answer
    x = 182,794.02

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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.