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Finding the Fourth Proportional to 308,728.68, 425,637.18 and 222,615.60

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Solution

The fourth proportional to 308,728.68, 425,637.18 and 222,615.60 is: 306,915.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,728.68 : 425,637.18 = 222,615.60 : x
  2. Step 2: Convert to fraction form
    308,728.68/425,637.18 = 222,615.60/x
  3. Step 3: Cross multiply
    308,728.68x = 425,637.18 × 222,615.60
  4. Step 4: Simplify right side
    308,728.68x = 94,753,476,208.01
  5. Step 5: Solve for x
    x = 94,753,476,208.01/308,728.68
  6. Step 6: Final answer
    x = 306,915.04

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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.