Home / 217,817.63-300,457.92-137,105.04

Finding the Fourth Proportional to 217,817.63, 300,457.92 and 137,105.04

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Solution

The fourth proportional to 217,817.63, 300,457.92 and 137,105.04 is: 189,122.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,817.63 : 300,457.92 = 137,105.04 : x
  2. Step 2: Convert to fraction form
    217,817.63/300,457.92 = 137,105.04/x
  3. Step 3: Cross multiply
    217,817.63x = 300,457.92 × 137,105.04
  4. Step 4: Simplify right side
    217,817.63x = 41,194,295,139.92
  5. Step 5: Solve for x
    x = 41,194,295,139.92/217,817.63
  6. Step 6: Final answer
    x = 189,122.87

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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.