Home / 217,456.10-326,267.18-84,429.76

Finding the Fourth Proportional to 217,456.10, 326,267.18 and 84,429.76

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Solution

The fourth proportional to 217,456.10, 326,267.18 and 84,429.76 is: 126,676.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,456.10 : 326,267.18 = 84,429.76 : x
  2. Step 2: Convert to fraction form
    217,456.10/326,267.18 = 84,429.76/x
  3. Step 3: Cross multiply
    217,456.10x = 326,267.18 × 84,429.76
  4. Step 4: Simplify right side
    217,456.10x = 27,546,659,703.28
  5. Step 5: Solve for x
    x = 27,546,659,703.28/217,456.10
  6. Step 6: Final answer
    x = 126,676.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.