Home / 226,020.52-311,830.88-129,154.78

Finding the Fourth Proportional to 226,020.52, 311,830.88 and 129,154.78

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Solution

The fourth proportional to 226,020.52, 311,830.88 and 129,154.78 is: 178,189.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    226,020.52 : 311,830.88 = 129,154.78 : x
  2. Step 2: Convert to fraction form
    226,020.52/311,830.88 = 129,154.78/x
  3. Step 3: Cross multiply
    226,020.52x = 311,830.88 × 129,154.78
  4. Step 4: Simplify right side
    226,020.52x = 40,274,448,447.62
  5. Step 5: Solve for x
    x = 40,274,448,447.62/226,020.52
  6. Step 6: Final answer
    x = 178,189.34

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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.