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Finding the Fourth Proportional to 225,373.19, 311,015.07 and 123,405.11

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Solution

The fourth proportional to 225,373.19, 311,015.07 and 123,405.11 is: 170,299.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,373.19 : 311,015.07 = 123,405.11 : x
  2. Step 2: Convert to fraction form
    225,373.19/311,015.07 = 123,405.11/x
  3. Step 3: Cross multiply
    225,373.19x = 311,015.07 × 123,405.11
  4. Step 4: Simplify right side
    225,373.19x = 38,380,847,947.03
  5. Step 5: Solve for x
    x = 38,380,847,947.03/225,373.19
  6. Step 6: Final answer
    x = 170,299.09

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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.