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Finding the Fourth Proportional to 410,481.20, 615,721.80 and 242,519.60

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Solution

The fourth proportional to 410,481.20, 615,721.80 and 242,519.60 is: 363,779.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    410,481.20 : 615,721.80 = 242,519.60 : x
  2. Step 2: Convert to fraction form
    410,481.20/615,721.80 = 242,519.60/x
  3. Step 3: Cross multiply
    410,481.20x = 615,721.80 × 242,519.60
  4. Step 4: Simplify right side
    410,481.20x = 149,324,604,647.28
  5. Step 5: Solve for x
    x = 149,324,604,647.28/410,481.20
  6. Step 6: Final answer
    x = 363,779.40

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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.