Home / 235,715.32-325,286.94-128,285.20

Finding the Fourth Proportional to 235,715.32, 325,286.94 and 128,285.20

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Solution

The fourth proportional to 235,715.32, 325,286.94 and 128,285.20 is: 177,033.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,715.32 : 325,286.94 = 128,285.20 : x
  2. Step 2: Convert to fraction form
    235,715.32/325,286.94 = 128,285.20/x
  3. Step 3: Cross multiply
    235,715.32x = 325,286.94 × 128,285.20
  4. Step 4: Simplify right side
    235,715.32x = 41,729,500,155.29
  5. Step 5: Solve for x
    x = 41,729,500,155.29/235,715.32
  6. Step 6: Final answer
    x = 177,033.47

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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.