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Finding the Fourth Proportional to 321,246.55, 443,320.10 and 192,190.48

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Solution

The fourth proportional to 321,246.55, 443,320.10 and 192,190.48 is: 265,222.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,246.55 : 443,320.10 = 192,190.48 : x
  2. Step 2: Convert to fraction form
    321,246.55/443,320.10 = 192,190.48/x
  3. Step 3: Cross multiply
    321,246.55x = 443,320.10 × 192,190.48
  4. Step 4: Simplify right side
    321,246.55x = 85,201,903,957.79
  5. Step 5: Solve for x
    x = 85,201,903,957.79/321,246.55
  6. Step 6: Final answer
    x = 265,222.78

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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.