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Finding the Fourth Proportional to 425,796.46, 638,731.58 and 155,997.88

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Solution

The fourth proportional to 425,796.46, 638,731.58 and 155,997.88 is: 234,010.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,796.46 : 638,731.58 = 155,997.88 : x
  2. Step 2: Convert to fraction form
    425,796.46/638,731.58 = 155,997.88/x
  3. Step 3: Cross multiply
    425,796.46x = 638,731.58 × 155,997.88
  4. Step 4: Simplify right side
    425,796.46x = 99,640,772,369.05
  5. Step 5: Solve for x
    x = 99,640,772,369.05/425,796.46
  6. Step 6: Final answer
    x = 234,010.34

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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.