Home / 279,936,370.40-419,904,555.60-192,638,328.80

Finding the Fourth Proportional to 279,936,370.40, 419,904,555.60 and 192,638,328.80

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Solution

The fourth proportional to 279,936,370.40, 419,904,555.60 and 192,638,328.80 is: 288,957,493.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,936,370.40 : 419,904,555.60 = 192,638,328.80 : x
  2. Step 2: Convert to fraction form
    279,936,370.40/419,904,555.60 = 192,638,328.80/x
  3. Step 3: Cross multiply
    279,936,370.40x = 419,904,555.60 × 192,638,328.80
  4. Step 4: Simplify right side
    279,936,370.40x = 80,889,711,846,290,688
  5. Step 5: Solve for x
    x = 80,889,711,846,290,688/279,936,370.40
  6. Step 6: Final answer
    x = 288,957,493.20

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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.