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Finding the Fourth Proportional to 216,872.64, 325,321.72 and 83,753.60

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Solution

The fourth proportional to 216,872.64, 325,321.72 and 83,753.60 is: 125,635.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,872.64 : 325,321.72 = 83,753.60 : x
  2. Step 2: Convert to fraction form
    216,872.64/325,321.72 = 83,753.60/x
  3. Step 3: Cross multiply
    216,872.64x = 325,321.72 × 83,753.60
  4. Step 4: Simplify right side
    216,872.64x = 27,246,865,208.19
  5. Step 5: Solve for x
    x = 27,246,865,208.19/216,872.64
  6. Step 6: Final answer
    x = 125,635.33

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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.