Home / 280,654.34-386,801.97-212,508.50

Finding the Fourth Proportional to 280,654.34, 386,801.97 and 212,508.50

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Solution

The fourth proportional to 280,654.34, 386,801.97 and 212,508.50 is: 292,882.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,654.34 : 386,801.97 = 212,508.50 : x
  2. Step 2: Convert to fraction form
    280,654.34/386,801.97 = 212,508.50/x
  3. Step 3: Cross multiply
    280,654.34x = 386,801.97 × 212,508.50
  4. Step 4: Simplify right side
    280,654.34x = 82,198,706,441.75
  5. Step 5: Solve for x
    x = 82,198,706,441.75/280,654.34
  6. Step 6: Final answer
    x = 292,882.36

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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.