Home / 272,500.20-408,750.30-172,335.60

Finding the Fourth Proportional to 272,500.20, 408,750.30 and 172,335.60

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Solution

The fourth proportional to 272,500.20, 408,750.30 and 172,335.60 is: 258,503.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,500.20 : 408,750.30 = 172,335.60 : x
  2. Step 2: Convert to fraction form
    272,500.20/408,750.30 = 172,335.60/x
  3. Step 3: Cross multiply
    272,500.20x = 408,750.30 × 172,335.60
  4. Step 4: Simplify right side
    272,500.20x = 70,442,228,200.68
  5. Step 5: Solve for x
    x = 70,442,228,200.68/272,500.20
  6. Step 6: Final answer
    x = 258,503.40

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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.