Home / 321,781.23-482,827.64-132,381.56

Finding the Fourth Proportional to 321,781.23, 482,827.64 and 132,381.56

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Solution

The fourth proportional to 321,781.23, 482,827.64 and 132,381.56 is: 198,636.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,781.23 : 482,827.64 = 132,381.56 : x
  2. Step 2: Convert to fraction form
    321,781.23/482,827.64 = 132,381.56/x
  3. Step 3: Cross multiply
    321,781.23x = 482,827.64 × 132,381.56
  4. Step 4: Simplify right side
    321,781.23x = 63,917,473,118.27
  5. Step 5: Solve for x
    x = 63,917,473,118.27/321,781.23
  6. Step 6: Final answer
    x = 198,636.42

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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.