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Finding the Fourth Proportional to 225,438.66, 311,111.16 and 123,469.74

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Solution

The fourth proportional to 225,438.66, 311,111.16 and 123,469.74 is: 170,391.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,438.66 : 311,111.16 = 123,469.74 : x
  2. Step 2: Convert to fraction form
    225,438.66/311,111.16 = 123,469.74/x
  3. Step 3: Cross multiply
    225,438.66x = 311,111.16 × 123,469.74
  4. Step 4: Simplify right side
    225,438.66x = 38,412,814,036.30
  5. Step 5: Solve for x
    x = 38,412,814,036.30/225,438.66
  6. Step 6: Final answer
    x = 170,391.42

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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.