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Finding the Fourth Proportional to 655,616.80, 983,425.20 and 256,270.60

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Solution

The fourth proportional to 655,616.80, 983,425.20 and 256,270.60 is: 384,405.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,616.80 : 983,425.20 = 256,270.60 : x
  2. Step 2: Convert to fraction form
    655,616.80/983,425.20 = 256,270.60/x
  3. Step 3: Cross multiply
    655,616.80x = 983,425.20 × 256,270.60
  4. Step 4: Simplify right side
    655,616.80x = 252,022,966,059.12
  5. Step 5: Solve for x
    x = 252,022,966,059.12/655,616.80
  6. Step 6: Final answer
    x = 384,405.90

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Similar ratio
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1.5x scale

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.