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Finding the Fourth Proportional to 323,864.56, 485,146.25 and 161,268.76

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Solution

The fourth proportional to 323,864.56, 485,146.25 and 161,268.76 is: 241,579.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,864.56 : 485,146.25 = 161,268.76 : x
  2. Step 2: Convert to fraction form
    323,864.56/485,146.25 = 161,268.76/x
  3. Step 3: Cross multiply
    323,864.56x = 485,146.25 × 161,268.76
  4. Step 4: Simplify right side
    323,864.56x = 78,238,933,349.81
  5. Step 5: Solve for x
    x = 78,238,933,349.81/323,864.56
  6. Step 6: Final answer
    x = 241,579.18

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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.