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Finding the Fourth Proportional to 425,145.88, 637,728.36 and 158,761.08

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Solution

The fourth proportional to 425,145.88, 637,728.36 and 158,761.08 is: 238,145.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,145.88 : 637,728.36 = 158,761.08 : x
  2. Step 2: Convert to fraction form
    425,145.88/637,728.36 = 158,761.08/x
  3. Step 3: Cross multiply
    425,145.88x = 637,728.36 × 158,761.08
  4. Step 4: Simplify right side
    425,145.88x = 101,246,443,180.23
  5. Step 5: Solve for x
    x = 101,246,443,180.23/425,145.88
  6. Step 6: Final answer
    x = 238,145.18

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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.