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Finding the Fourth Proportional to 359,416.20, 495,976.68 and 216,148.44

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Solution

The fourth proportional to 359,416.20, 495,976.68 and 216,148.44 is: 298,274.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,416.20 : 495,976.68 = 216,148.44 : x
  2. Step 2: Convert to fraction form
    359,416.20/495,976.68 = 216,148.44/x
  3. Step 3: Cross multiply
    359,416.20x = 495,976.68 × 216,148.44
  4. Step 4: Simplify right side
    359,416.20x = 107,204,585,658.38
  5. Step 5: Solve for x
    x = 107,204,585,658.38/359,416.20
  6. Step 6: Final answer
    x = 298,274.22

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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.