Home / 225,678.15-311,439.62-122,315.65

Finding the Fourth Proportional to 225,678.15, 311,439.62 and 122,315.65

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Solution

The fourth proportional to 225,678.15, 311,439.62 and 122,315.65 is: 168,797.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,678.15 : 311,439.62 = 122,315.65 : x
  2. Step 2: Convert to fraction form
    225,678.15/311,439.62 = 122,315.65/x
  3. Step 3: Cross multiply
    225,678.15x = 311,439.62 × 122,315.65
  4. Step 4: Simplify right side
    225,678.15x = 38,093,938,822.82
  5. Step 5: Solve for x
    x = 38,093,938,822.82/225,678.15
  6. Step 6: Final answer
    x = 168,797.64

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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.