Home / 225,378.55-311,012.76-123,402.16

Finding the Fourth Proportional to 225,378.55, 311,012.76 and 123,402.16

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Solution

The fourth proportional to 225,378.55, 311,012.76 and 123,402.16 is: 170,289.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,378.55 : 311,012.76 = 123,402.16 : x
  2. Step 2: Convert to fraction form
    225,378.55/311,012.76 = 123,402.16/x
  3. Step 3: Cross multiply
    225,378.55x = 311,012.76 × 123,402.16
  4. Step 4: Simplify right side
    225,378.55x = 38,379,646,371.56
  5. Step 5: Solve for x
    x = 38,379,646,371.56/225,378.55
  6. Step 6: Final answer
    x = 170,289.70

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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.