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Finding the Fourth Proportional to 217,714.52, 300,443.40 and 122,218.76

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Solution

The fourth proportional to 217,714.52, 300,443.40 and 122,218.76 is: 168,660.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,714.52 : 300,443.40 = 122,218.76 : x
  2. Step 2: Convert to fraction form
    217,714.52/300,443.40 = 122,218.76/x
  3. Step 3: Cross multiply
    217,714.52x = 300,443.40 × 122,218.76
  4. Step 4: Simplify right side
    217,714.52x = 36,719,819,798.18
  5. Step 5: Solve for x
    x = 36,719,819,798.18/217,714.52
  6. Step 6: Final answer
    x = 168,660.41

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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.