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Finding the Fourth Proportional to 425,449.56, 638,285.04 and 159,231

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Solution

The fourth proportional to 425,449.56, 638,285.04 and 159,231 is: 238,887.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,449.56 : 638,285.04 = 159,231 : x
  2. Step 2: Convert to fraction form
    425,449.56/638,285.04 = 159,231/x
  3. Step 3: Cross multiply
    425,449.56x = 638,285.04 × 159,231
  4. Step 4: Simplify right side
    425,449.56x = 101,634,765,204.24
  5. Step 5: Solve for x
    x = 101,634,765,204.24/425,449.56
  6. Step 6: Final answer
    x = 238,887.93

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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.