Home / 225,707.28-311,575.26-157,990.20

Finding the Fourth Proportional to 225,707.28, 311,575.26 and 157,990.20

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Solution

The fourth proportional to 225,707.28, 311,575.26 and 157,990.20 is: 218,095.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,707.28 : 311,575.26 = 157,990.20 : x
  2. Step 2: Convert to fraction form
    225,707.28/311,575.26 = 157,990.20/x
  3. Step 3: Cross multiply
    225,707.28x = 311,575.26 × 157,990.20
  4. Step 4: Simplify right side
    225,707.28x = 49,225,837,642.45
  5. Step 5: Solve for x
    x = 49,225,837,642.45/225,707.28
  6. Step 6: Final answer
    x = 218,095.92

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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.