Home / 275,000.20-412,500.30-212,792.20

Finding the Fourth Proportional to 275,000.20, 412,500.30 and 212,792.20

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Solution

The fourth proportional to 275,000.20, 412,500.30 and 212,792.20 is: 319,188.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,000.20 : 412,500.30 = 212,792.20 : x
  2. Step 2: Convert to fraction form
    275,000.20/412,500.30 = 212,792.20/x
  3. Step 3: Cross multiply
    275,000.20x = 412,500.30 × 212,792.20
  4. Step 4: Simplify right side
    275,000.20x = 87,776,846,337.66
  5. Step 5: Solve for x
    x = 87,776,846,337.66/275,000.20
  6. Step 6: Final answer
    x = 319,188.30

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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.