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Finding the Fourth Proportional to 323,570.72, 485,463.71 and 143,631.19

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Solution

The fourth proportional to 323,570.72, 485,463.71 and 143,631.19 is: 215,494.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,570.72 : 485,463.71 = 143,631.19 : x
  2. Step 2: Convert to fraction form
    323,570.72/485,463.71 = 143,631.19/x
  3. Step 3: Cross multiply
    323,570.72x = 485,463.71 × 143,631.19
  4. Step 4: Simplify right side
    323,570.72x = 69,727,729,514.53
  5. Step 5: Solve for x
    x = 69,727,729,514.53/323,570.72
  6. Step 6: Final answer
    x = 215,494.56

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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.