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Finding the Fourth Proportional to 449,505.20, 674,257.80 and 271,920.80

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Solution

The fourth proportional to 449,505.20, 674,257.80 and 271,920.80 is: 407,881.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,505.20 : 674,257.80 = 271,920.80 : x
  2. Step 2: Convert to fraction form
    449,505.20/674,257.80 = 271,920.80/x
  3. Step 3: Cross multiply
    449,505.20x = 674,257.80 × 271,920.80
  4. Step 4: Simplify right side
    449,505.20x = 183,344,720,382.24
  5. Step 5: Solve for x
    x = 183,344,720,382.24/449,505.20
  6. Step 6: Final answer
    x = 407,881.20

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1.5x scale

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.