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Finding the Fourth Proportional to 321,241, 443,318.98 and 187,113.64

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Solution

The fourth proportional to 321,241, 443,318.98 and 187,113.64 is: 258,220.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,241 : 443,318.98 = 187,113.64 : x
  2. Step 2: Convert to fraction form
    321,241/443,318.98 = 187,113.64/x
  3. Step 3: Cross multiply
    321,241x = 443,318.98 × 187,113.64
  4. Step 4: Simplify right side
    321,241x = 82,951,028,028.89
  5. Step 5: Solve for x
    x = 82,951,028,028.89/321,241
  6. Step 6: Final answer
    x = 258,220.55

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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.