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Finding the Fourth Proportional to 359,309.20, 495,859 and 198,169.20

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Solution

The fourth proportional to 359,309.20, 495,859 and 198,169.20 is: 273,480.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,309.20 : 495,859 = 198,169.20 : x
  2. Step 2: Convert to fraction form
    359,309.20/495,859 = 198,169.20/x
  3. Step 3: Cross multiply
    359,309.20x = 495,859 × 198,169.20
  4. Step 4: Simplify right side
    359,309.20x = 98,263,981,342.80
  5. Step 5: Solve for x
    x = 98,263,981,342.80/359,309.20
  6. Step 6: Final answer
    x = 273,480.28

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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.