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Finding the Fourth Proportional to 225,735.70, 311,518.76 and 123,770.46

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Solution

The fourth proportional to 225,735.70, 311,518.76 and 123,770.46 is: 170,805.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,735.70 : 311,518.76 = 123,770.46 : x
  2. Step 2: Convert to fraction form
    225,735.70/311,518.76 = 123,770.46/x
  3. Step 3: Cross multiply
    225,735.70x = 311,518.76 × 123,770.46
  4. Step 4: Simplify right side
    225,735.70x = 38,556,820,223.83
  5. Step 5: Solve for x
    x = 38,556,820,223.83/225,735.70
  6. Step 6: Final answer
    x = 170,805.15

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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.