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Finding the Fourth Proportional to 425,375.87, 637,989.28 and 159,081.28

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Solution

The fourth proportional to 425,375.87, 637,989.28 and 159,081.28 is: 238,594.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,375.87 : 637,989.28 = 159,081.28 : x
  2. Step 2: Convert to fraction form
    425,375.87/637,989.28 = 159,081.28/x
  3. Step 3: Cross multiply
    425,375.87x = 637,989.28 × 159,081.28
  4. Step 4: Simplify right side
    425,375.87x = 101,492,149,296.00
  5. Step 5: Solve for x
    x = 101,492,149,296.00/425,375.87
  6. Step 6: Final answer
    x = 238,594.05

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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.