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Finding the Fourth Proportional to 217,714.57, 300,425.57 and 122,202.61

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Solution

The fourth proportional to 217,714.57, 300,425.57 and 122,202.61 is: 168,628.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,714.57 : 300,425.57 = 122,202.61 : x
  2. Step 2: Convert to fraction form
    217,714.57/300,425.57 = 122,202.61/x
  3. Step 3: Cross multiply
    217,714.57x = 300,425.57 × 122,202.61
  4. Step 4: Simplify right side
    217,714.57x = 36,712,788,153.72
  5. Step 5: Solve for x
    x = 36,712,788,153.72/217,714.57
  6. Step 6: Final answer
    x = 168,628.07

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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.