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Finding the Fourth Proportional to 217,676.64, 300,377.28 and 122,164.92

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Solution

The fourth proportional to 217,676.64, 300,377.28 and 122,164.92 is: 168,578.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,676.64 : 300,377.28 = 122,164.92 : x
  2. Step 2: Convert to fraction form
    217,676.64/300,377.28 = 122,164.92/x
  3. Step 3: Cross multiply
    217,676.64x = 300,377.28 × 122,164.92
  4. Step 4: Simplify right side
    217,676.64x = 36,695,566,381.02
  5. Step 5: Solve for x
    x = 36,695,566,381.02/217,676.64
  6. Step 6: Final answer
    x = 168,578.34

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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.