Home / 225,440.18-311,104.48-128,641.74

Finding the Fourth Proportional to 225,440.18, 311,104.48 and 128,641.74

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Solution

The fourth proportional to 225,440.18, 311,104.48 and 128,641.74 is: 177,523.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,440.18 : 311,104.48 = 128,641.74 : x
  2. Step 2: Convert to fraction form
    225,440.18/311,104.48 = 128,641.74/x
  3. Step 3: Cross multiply
    225,440.18x = 311,104.48 × 128,641.74
  4. Step 4: Simplify right side
    225,440.18x = 40,021,021,629.00
  5. Step 5: Solve for x
    x = 40,021,021,629.00/225,440.18
  6. Step 6: Final answer
    x = 177,523.91

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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.