Home / 217,519.57-300,305.70-137,016.10

Finding the Fourth Proportional to 217,519.57, 300,305.70 and 137,016.10

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Solution

The fourth proportional to 217,519.57, 300,305.70 and 137,016.10 is: 189,163.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,519.57 : 300,305.70 = 137,016.10 : x
  2. Step 2: Convert to fraction form
    217,519.57/300,305.70 = 137,016.10/x
  3. Step 3: Cross multiply
    217,519.57x = 300,305.70 × 137,016.10
  4. Step 4: Simplify right side
    217,519.57x = 41,146,715,821.77
  5. Step 5: Solve for x
    x = 41,146,715,821.77/217,519.57
  6. Step 6: Final answer
    x = 189,163.28

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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.