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Finding the Fourth Proportional to 217,714.02, 300,442.71 and 122,218.26

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Solution

The fourth proportional to 217,714.02, 300,442.71 and 122,218.26 is: 168,659.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,714.02 : 300,442.71 = 122,218.26 : x
  2. Step 2: Convert to fraction form
    217,714.02/300,442.71 = 122,218.26/x
  3. Step 3: Cross multiply
    217,714.02x = 300,442.71 × 122,218.26
  4. Step 4: Simplify right side
    217,714.02x = 36,719,585,245.88
  5. Step 5: Solve for x
    x = 36,719,585,245.88/217,714.02
  6. Step 6: Final answer
    x = 168,659.72

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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.