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Finding the Fourth Proportional to 217,753.36, 300,489.96 and 122,258.32

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Solution

The fourth proportional to 217,753.36, 300,489.96 and 122,258.32 is: 168,711.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,753.36 : 300,489.96 = 122,258.32 : x
  2. Step 2: Convert to fraction form
    217,753.36/300,489.96 = 122,258.32/x
  3. Step 3: Cross multiply
    217,753.36x = 300,489.96 × 122,258.32
  4. Step 4: Simplify right side
    217,753.36x = 36,737,397,686.47
  5. Step 5: Solve for x
    x = 36,737,397,686.47/217,753.36
  6. Step 6: Final answer
    x = 168,711.05

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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.