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Finding the Fourth Proportional to 262,991,352.90, 394,487,029.35 and 109,747,388.10

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Solution

The fourth proportional to 262,991,352.90, 394,487,029.35 and 109,747,388.10 is: 164,621,082.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,991,352.90 : 394,487,029.35 = 109,747,388.10 : x
  2. Step 2: Convert to fraction form
    262,991,352.90/394,487,029.35 = 109,747,388.10/x
  3. Step 3: Cross multiply
    262,991,352.90x = 394,487,029.35 × 109,747,388.10
  4. Step 4: Simplify right side
    262,991,352.90x = 43,293,921,110,490,544
  5. Step 5: Solve for x
    x = 43,293,921,110,490,544/262,991,352.90
  6. Step 6: Final answer
    x = 164,621,082.15

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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.