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Finding the Fourth Proportional to 321,125.82, 443,134.58 and 175,902.57

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Solution

The fourth proportional to 321,125.82, 443,134.58 and 175,902.57 is: 242,735.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,125.82 : 443,134.58 = 175,902.57 : x
  2. Step 2: Convert to fraction form
    321,125.82/443,134.58 = 175,902.57/x
  3. Step 3: Cross multiply
    321,125.82x = 443,134.58 × 175,902.57
  4. Step 4: Simplify right side
    321,125.82x = 77,948,511,587.81
  5. Step 5: Solve for x
    x = 77,948,511,587.81/321,125.82
  6. Step 6: Final answer
    x = 242,735.11

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1.5x scale

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.