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Finding the Fourth Proportional to 424,162.68, 636,227.40 and 143,679.92

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Solution

The fourth proportional to 424,162.68, 636,227.40 and 143,679.92 is: 215,514.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,162.68 : 636,227.40 = 143,679.92 : x
  2. Step 2: Convert to fraction form
    424,162.68/636,227.40 = 143,679.92/x
  3. Step 3: Cross multiply
    424,162.68x = 636,227.40 × 143,679.92
  4. Step 4: Simplify right side
    424,162.68x = 91,413,101,933.81
  5. Step 5: Solve for x
    x = 91,413,101,933.81/424,162.68
  6. Step 6: Final answer
    x = 215,514.25

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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.