Home / 289,747.20-434,620.80-148,029.60

Finding the Fourth Proportional to 289,747.20, 434,620.80 and 148,029.60

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Solution

The fourth proportional to 289,747.20, 434,620.80 and 148,029.60 is: 222,044.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,747.20 : 434,620.80 = 148,029.60 : x
  2. Step 2: Convert to fraction form
    289,747.20/434,620.80 = 148,029.60/x
  3. Step 3: Cross multiply
    289,747.20x = 434,620.80 × 148,029.60
  4. Step 4: Simplify right side
    289,747.20x = 64,336,743,175.68
  5. Step 5: Solve for x
    x = 64,336,743,175.68/289,747.20
  6. Step 6: Final answer
    x = 222,044.40

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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.