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Finding the Fourth Proportional to 225,398.70, 311,040.60 and 123,422.34

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Solution

The fourth proportional to 225,398.70, 311,040.60 and 123,422.34 is: 170,317.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,398.70 : 311,040.60 = 123,422.34 : x
  2. Step 2: Convert to fraction form
    225,398.70/311,040.60 = 123,422.34/x
  3. Step 3: Cross multiply
    225,398.70x = 311,040.60 × 123,422.34
  4. Step 4: Simplify right side
    225,398.70x = 38,389,358,687.00
  5. Step 5: Solve for x
    x = 38,389,358,687.00/225,398.70
  6. Step 6: Final answer
    x = 170,317.57

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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.