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Finding the Fourth Proportional to 321,525.56, 443,703.48 and 178,306.76

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Solution

The fourth proportional to 321,525.56, 443,703.48 and 178,306.76 is: 246,062.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,525.56 : 443,703.48 = 178,306.76 : x
  2. Step 2: Convert to fraction form
    321,525.56/443,703.48 = 178,306.76/x
  3. Step 3: Cross multiply
    321,525.56x = 443,703.48 × 178,306.76
  4. Step 4: Simplify right side
    321,525.56x = 79,115,329,919.52
  5. Step 5: Solve for x
    x = 79,115,329,919.52/321,525.56
  6. Step 6: Final answer
    x = 246,062.33

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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.