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Finding the Fourth Proportional to 321,525.14, 443,614.20 and 253,330.70

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Solution

The fourth proportional to 321,525.14, 443,614.20 and 253,330.70 is: 349,525.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,525.14 : 443,614.20 = 253,330.70 : x
  2. Step 2: Convert to fraction form
    321,525.14/443,614.20 = 253,330.70/x
  3. Step 3: Cross multiply
    321,525.14x = 443,614.20 × 253,330.70
  4. Step 4: Simplify right side
    321,525.14x = 112,381,095,815.94
  5. Step 5: Solve for x
    x = 112,381,095,815.94/321,525.14
  6. Step 6: Final answer
    x = 349,525.07

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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.