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Finding the Fourth Proportional to 425,366.64, 638,272.44 and 275,568.48

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Solution

The fourth proportional to 425,366.64, 638,272.44 and 275,568.48 is: 413,496.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,366.64 : 638,272.44 = 275,568.48 : x
  2. Step 2: Convert to fraction form
    425,366.64/638,272.44 = 275,568.48/x
  3. Step 3: Cross multiply
    425,366.64x = 638,272.44 × 275,568.48
  4. Step 4: Simplify right side
    425,366.64x = 175,887,766,116.69
  5. Step 5: Solve for x
    x = 175,887,766,116.69/425,366.64
  6. Step 6: Final answer
    x = 413,496.85

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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.