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Finding the Fourth Proportional to 481,225.76, 663,938.88 and 279,982.88

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Solution

The fourth proportional to 481,225.76, 663,938.88 and 279,982.88 is: 386,287.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,225.76 : 663,938.88 = 279,982.88 : x
  2. Step 2: Convert to fraction form
    481,225.76/663,938.88 = 279,982.88/x
  3. Step 3: Cross multiply
    481,225.76x = 663,938.88 × 279,982.88
  4. Step 4: Simplify right side
    481,225.76x = 185,891,519,766.37
  5. Step 5: Solve for x
    x = 185,891,519,766.37/481,225.76
  6. Step 6: Final answer
    x = 386,287.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.