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Finding the Fourth Proportional to 323,633.28, 485,434.80 and 113,318.40

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Solution

The fourth proportional to 323,633.28, 485,434.80 and 113,318.40 is: 169,972.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,633.28 : 485,434.80 = 113,318.40 : x
  2. Step 2: Convert to fraction form
    323,633.28/485,434.80 = 113,318.40/x
  3. Step 3: Cross multiply
    323,633.28x = 485,434.80 × 113,318.40
  4. Step 4: Simplify right side
    323,633.28x = 55,008,694,840.32
  5. Step 5: Solve for x
    x = 55,008,694,840.32/323,633.28
  6. Step 6: Final answer
    x = 169,972.31

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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.