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Finding the Fourth Proportional to 321,609.89, 482,452.28 and 122,079.53

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Solution

The fourth proportional to 321,609.89, 482,452.28 and 122,079.53 is: 183,133.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,609.89 : 482,452.28 = 122,079.53 : x
  2. Step 2: Convert to fraction form
    321,609.89/482,452.28 = 122,079.53/x
  3. Step 3: Cross multiply
    321,609.89x = 482,452.28 × 122,079.53
  4. Step 4: Simplify right side
    321,609.89x = 58,897,547,589.83
  5. Step 5: Solve for x
    x = 58,897,547,589.83/321,609.89
  6. Step 6: Final answer
    x = 183,133.51

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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.