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Finding the Fourth Proportional to 321,534.56, 443,685.72 and 185,612.30

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Solution

The fourth proportional to 321,534.56, 443,685.72 and 185,612.30 is: 256,126.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,534.56 : 443,685.72 = 185,612.30 : x
  2. Step 2: Convert to fraction form
    321,534.56/443,685.72 = 185,612.30/x
  3. Step 3: Cross multiply
    321,534.56x = 443,685.72 × 185,612.30
  4. Step 4: Simplify right side
    321,534.56x = 82,353,524,747.93
  5. Step 5: Solve for x
    x = 82,353,524,747.93/321,534.56
  6. Step 6: Final answer
    x = 256,126.51

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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.