Home / 392,256,876.80-588,385,315.20-256,207,980.80

Finding the Fourth Proportional to 392,256,876.80, 588,385,315.20 and 256,207,980.80

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Solution

The fourth proportional to 392,256,876.80, 588,385,315.20 and 256,207,980.80 is: 384,311,971.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,256,876.80 : 588,385,315.20 = 256,207,980.80 : x
  2. Step 2: Convert to fraction form
    392,256,876.80/588,385,315.20 = 256,207,980.80/x
  3. Step 3: Cross multiply
    392,256,876.80x = 588,385,315.20 × 256,207,980.80
  4. Step 4: Simplify right side
    392,256,876.80x = 150,749,013,539,763,552
  5. Step 5: Solve for x
    x = 150,749,013,539,763,552/392,256,876.80
  6. Step 6: Final answer
    x = 384,311,971.20

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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.