Home / 321,315.55-443,412.75-176,129.43

Finding the Fourth Proportional to 321,315.55, 443,412.75 and 176,129.43

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Solution

The fourth proportional to 321,315.55, 443,412.75 and 176,129.43 is: 243,057.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,315.55 : 443,412.75 = 176,129.43 : x
  2. Step 2: Convert to fraction form
    321,315.55/443,412.75 = 176,129.43/x
  3. Step 3: Cross multiply
    321,315.55x = 443,412.75 × 176,129.43
  4. Step 4: Simplify right side
    321,315.55x = 78,098,034,912.23
  5. Step 5: Solve for x
    x = 78,098,034,912.23/321,315.55
  6. Step 6: Final answer
    x = 243,057.13

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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.