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Finding the Fourth Proportional to 293,405,912.80, 440,108,869.20 and 262,794,911.20

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Solution

The fourth proportional to 293,405,912.80, 440,108,869.20 and 262,794,911.20 is: 394,192,366.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,405,912.80 : 440,108,869.20 = 262,794,911.20 : x
  2. Step 2: Convert to fraction form
    293,405,912.80/440,108,869.20 = 262,794,911.20/x
  3. Step 3: Cross multiply
    293,405,912.80x = 440,108,869.20 × 262,794,911.20
  4. Step 4: Simplify right side
    293,405,912.80x = 115,658,371,199,746,400
  5. Step 5: Solve for x
    x = 115,658,371,199,746,400/293,405,912.80
  6. Step 6: Final answer
    x = 394,192,366.80

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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.