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Finding the Fourth Proportional to 275,177.20, 412,765.80 and 212,892.40

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Solution

The fourth proportional to 275,177.20, 412,765.80 and 212,892.40 is: 319,338.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,177.20 : 412,765.80 = 212,892.40 : x
  2. Step 2: Convert to fraction form
    275,177.20/412,765.80 = 212,892.40/x
  3. Step 3: Cross multiply
    275,177.20x = 412,765.80 × 212,892.40
  4. Step 4: Simplify right side
    275,177.20x = 87,874,701,799.92
  5. Step 5: Solve for x
    x = 87,874,701,799.92/275,177.20
  6. Step 6: Final answer
    x = 319,338.60

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1.5x scale

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.