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Finding the Fourth Proportional to 321,294.55, 443,404.13 and 178,051.52

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Solution

The fourth proportional to 321,294.55, 443,404.13 and 178,051.52 is: 245,720.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,294.55 : 443,404.13 = 178,051.52 : x
  2. Step 2: Convert to fraction form
    321,294.55/443,404.13 = 178,051.52/x
  3. Step 3: Cross multiply
    321,294.55x = 443,404.13 × 178,051.52
  4. Step 4: Simplify right side
    321,294.55x = 78,948,779,320.78
  5. Step 5: Solve for x
    x = 78,948,779,320.78/321,294.55
  6. Step 6: Final answer
    x = 245,720.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.