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Finding the Fourth Proportional to 329,775.90, 494,080.65 and 279,620.70

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Solution

The fourth proportional to 329,775.90, 494,080.65 and 279,620.70 is: 418,936.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,775.90 : 494,080.65 = 279,620.70 : x
  2. Step 2: Convert to fraction form
    329,775.90/494,080.65 = 279,620.70/x
  3. Step 3: Cross multiply
    329,775.90x = 494,080.65 × 279,620.70
  4. Step 4: Simplify right side
    329,775.90x = 138,155,177,209.46
  5. Step 5: Solve for x
    x = 138,155,177,209.46/329,775.90
  6. Step 6: Final answer
    x = 418,936.55

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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.