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Finding the Fourth Proportional to 225,510.75, 311,205.44 and 124,908.75

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Solution

The fourth proportional to 225,510.75, 311,205.44 and 124,908.75 is: 172,374.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,510.75 : 311,205.44 = 124,908.75 : x
  2. Step 2: Convert to fraction form
    225,510.75/311,205.44 = 124,908.75/x
  3. Step 3: Cross multiply
    225,510.75x = 311,205.44 × 124,908.75
  4. Step 4: Simplify right side
    225,510.75x = 38,872,282,815.87
  5. Step 5: Solve for x
    x = 38,872,282,815.87/225,510.75
  6. Step 6: Final answer
    x = 172,374.41

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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.