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Finding the Fourth Proportional to 225,793.28, 311,362.11 and 157,785.32

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Solution

The fourth proportional to 225,793.28, 311,362.11 and 157,785.32 is: 217,581.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,793.28 : 311,362.11 = 157,785.32 : x
  2. Step 2: Convert to fraction form
    225,793.28/311,362.11 = 157,785.32/x
  3. Step 3: Cross multiply
    225,793.28x = 311,362.11 × 157,785.32
  4. Step 4: Simplify right side
    225,793.28x = 49,128,370,162.23
  5. Step 5: Solve for x
    x = 49,128,370,162.23/225,793.28
  6. Step 6: Final answer
    x = 217,581.19

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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.