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Finding the Fourth Proportional to 230,248.28, 317,753.62 and 128,280.62

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Solution

The fourth proportional to 230,248.28, 317,753.62 and 128,280.62 is: 177,033.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,248.28 : 317,753.62 = 128,280.62 : x
  2. Step 2: Convert to fraction form
    230,248.28/317,753.62 = 128,280.62/x
  3. Step 3: Cross multiply
    230,248.28x = 317,753.62 × 128,280.62
  4. Step 4: Simplify right side
    230,248.28x = 40,761,631,380.84
  5. Step 5: Solve for x
    x = 40,761,631,380.84/230,248.28
  6. Step 6: Final answer
    x = 177,033.38

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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.