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Finding the Fourth Proportional to 192,614.40, 288,921.60 and 129,628.80

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Solution

The fourth proportional to 192,614.40, 288,921.60 and 129,628.80 is: 194,443.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,614.40 : 288,921.60 = 129,628.80 : x
  2. Step 2: Convert to fraction form
    192,614.40/288,921.60 = 129,628.80/x
  3. Step 3: Cross multiply
    192,614.40x = 288,921.60 × 129,628.80
  4. Step 4: Simplify right side
    192,614.40x = 37,452,560,302.08
  5. Step 5: Solve for x
    x = 37,452,560,302.08/192,614.40
  6. Step 6: Final answer
    x = 194,443.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.