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Finding the Fourth Proportional to 217,910.27, 300,714.35 and 122,414.91

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Solution

The fourth proportional to 217,910.27, 300,714.35 and 122,414.91 is: 168,931.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,910.27 : 300,714.35 = 122,414.91 : x
  2. Step 2: Convert to fraction form
    217,910.27/300,714.35 = 122,414.91/x
  3. Step 3: Cross multiply
    217,910.27x = 300,714.35 × 122,414.91
  4. Step 4: Simplify right side
    217,910.27x = 36,811,920,397.00
  5. Step 5: Solve for x
    x = 36,811,920,397.00/217,910.27
  6. Step 6: Final answer
    x = 168,931.56

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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.