Home / 268,976.12-371,189.80-148,128.64

Finding the Fourth Proportional to 268,976.12, 371,189.80 and 148,128.64

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Solution

The fourth proportional to 268,976.12, 371,189.80 and 148,128.64 is: 204,419.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,976.12 : 371,189.80 = 148,128.64 : x
  2. Step 2: Convert to fraction form
    268,976.12/371,189.80 = 148,128.64/x
  3. Step 3: Cross multiply
    268,976.12x = 371,189.80 × 148,128.64
  4. Step 4: Simplify right side
    268,976.12x = 54,983,840,255.87
  5. Step 5: Solve for x
    x = 54,983,840,255.87/268,976.12
  6. Step 6: Final answer
    x = 204,419.04

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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.