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Finding the Fourth Proportional to 206,674.80, 310,012.20 and 88,479.60

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Solution

The fourth proportional to 206,674.80, 310,012.20 and 88,479.60 is: 132,719.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,674.80 : 310,012.20 = 88,479.60 : x
  2. Step 2: Convert to fraction form
    206,674.80/310,012.20 = 88,479.60/x
  3. Step 3: Cross multiply
    206,674.80x = 310,012.20 × 88,479.60
  4. Step 4: Simplify right side
    206,674.80x = 27,429,755,451.12
  5. Step 5: Solve for x
    x = 27,429,755,451.12/206,674.80
  6. Step 6: Final answer
    x = 132,719.40

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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.