Home / 262,289,331.80-393,433,997.70-80,512,890.20

Finding the Fourth Proportional to 262,289,331.80, 393,433,997.70 and 80,512,890.20

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Solution

The fourth proportional to 262,289,331.80, 393,433,997.70 and 80,512,890.20 is: 120,769,335.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,289,331.80 : 393,433,997.70 = 80,512,890.20 : x
  2. Step 2: Convert to fraction form
    262,289,331.80/393,433,997.70 = 80,512,890.20/x
  3. Step 3: Cross multiply
    262,289,331.80x = 393,433,997.70 × 80,512,890.20
  4. Step 4: Simplify right side
    262,289,331.80x = 31,676,508,257,767,152
  5. Step 5: Solve for x
    x = 31,676,508,257,767,152/262,289,331.80
  6. Step 6: Final answer
    x = 120,769,335.30

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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.