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Finding the Fourth Proportional to 498,936.72, 748,455.48 and 161,963.28

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Solution

The fourth proportional to 498,936.72, 748,455.48 and 161,963.28 is: 242,961.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,936.72 : 748,455.48 = 161,963.28 : x
  2. Step 2: Convert to fraction form
    498,936.72/748,455.48 = 161,963.28/x
  3. Step 3: Cross multiply
    498,936.72x = 748,455.48 × 161,963.28
  4. Step 4: Simplify right side
    498,936.72x = 121,222,304,474.77
  5. Step 5: Solve for x
    x = 121,222,304,474.77/498,936.72
  6. Step 6: Final answer
    x = 242,961.28

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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.