Home / 225,397.38-311,003.90-128,599.14

Finding the Fourth Proportional to 225,397.38, 311,003.90 and 128,599.14

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Solution

The fourth proportional to 225,397.38, 311,003.90 and 128,599.14 is: 177,441.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,397.38 : 311,003.90 = 128,599.14 : x
  2. Step 2: Convert to fraction form
    225,397.38/311,003.90 = 128,599.14/x
  3. Step 3: Cross multiply
    225,397.38x = 311,003.90 × 128,599.14
  4. Step 4: Simplify right side
    225,397.38x = 39,994,834,076.65
  5. Step 5: Solve for x
    x = 39,994,834,076.65/225,397.38
  6. Step 6: Final answer
    x = 177,441.43

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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.