Home / 216,565.27-324,629.75-90,275.38

Finding the Fourth Proportional to 216,565.27, 324,629.75 and 90,275.38

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Solution

The fourth proportional to 216,565.27, 324,629.75 and 90,275.38 is: 135,322.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,565.27 : 324,629.75 = 90,275.38 : x
  2. Step 2: Convert to fraction form
    216,565.27/324,629.75 = 90,275.38/x
  3. Step 3: Cross multiply
    216,565.27x = 324,629.75 × 90,275.38
  4. Step 4: Simplify right side
    216,565.27x = 29,306,073,454.67
  5. Step 5: Solve for x
    x = 29,306,073,454.67/216,565.27
  6. Step 6: Final answer
    x = 135,322.13

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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.