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Finding the Fourth Proportional to 321,378.84, 443,524.14 and 178,144.92

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Solution

The fourth proportional to 321,378.84, 443,524.14 and 178,144.92 is: 245,851.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,378.84 : 443,524.14 = 178,144.92 : x
  2. Step 2: Convert to fraction form
    321,378.84/443,524.14 = 178,144.92/x
  3. Step 3: Cross multiply
    321,378.84x = 443,524.14 × 178,144.92
  4. Step 4: Simplify right side
    321,378.84x = 79,011,572,438.37
  5. Step 5: Solve for x
    x = 79,011,572,438.37/321,378.84
  6. Step 6: Final answer
    x = 245,851.82

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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.