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Finding the Fourth Proportional to 321,421.95, 443,472.46 and 253,227.22

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Solution

The fourth proportional to 321,421.95, 443,472.46 and 253,227.22 is: 349,382.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,421.95 : 443,472.46 = 253,227.22 : x
  2. Step 2: Convert to fraction form
    321,421.95/443,472.46 = 253,227.22/x
  3. Step 3: Cross multiply
    321,421.95x = 443,472.46 × 253,227.22
  4. Step 4: Simplify right side
    321,421.95x = 112,299,299,212.68
  5. Step 5: Solve for x
    x = 112,299,299,212.68/321,421.95
  6. Step 6: Final answer
    x = 349,382.80

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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.