Home / 218,022.65-300,896.19-121,236.15

Finding the Fourth Proportional to 218,022.65, 300,896.19 and 121,236.15

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Solution

The fourth proportional to 218,022.65, 300,896.19 and 121,236.15 is: 167,319.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,022.65 : 300,896.19 = 121,236.15 : x
  2. Step 2: Convert to fraction form
    218,022.65/300,896.19 = 121,236.15/x
  3. Step 3: Cross multiply
    218,022.65x = 300,896.19 × 121,236.15
  4. Step 4: Simplify right side
    218,022.65x = 36,479,495,625.27
  5. Step 5: Solve for x
    x = 36,479,495,625.27/218,022.65
  6. Step 6: Final answer
    x = 167,319.76

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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.