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Finding the Fourth Proportional to 308,726.68, 425,634.42 and 222,613.60

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Solution

The fourth proportional to 308,726.68, 425,634.42 and 222,613.60 is: 306,912.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,726.68 : 425,634.42 = 222,613.60 : x
  2. Step 2: Convert to fraction form
    308,726.68/425,634.42 = 222,613.60/x
  3. Step 3: Cross multiply
    308,726.68x = 425,634.42 × 222,613.60
  4. Step 4: Simplify right side
    308,726.68x = 94,752,010,520.11
  5. Step 5: Solve for x
    x = 94,752,010,520.11/308,726.68
  6. Step 6: Final answer
    x = 306,912.28

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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.