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Finding the Fourth Proportional to 359,279.60, 538,336.20 and 225,921.20

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Solution

The fourth proportional to 359,279.60, 538,336.20 and 225,921.20 is: 338,515.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,279.60 : 538,336.20 = 225,921.20 : x
  2. Step 2: Convert to fraction form
    359,279.60/538,336.20 = 225,921.20/x
  3. Step 3: Cross multiply
    359,279.60x = 538,336.20 × 225,921.20
  4. Step 4: Simplify right side
    359,279.60x = 121,621,560,307.44
  5. Step 5: Solve for x
    x = 121,621,560,307.44/359,279.60
  6. Step 6: Final answer
    x = 338,515.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.