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Finding the Fourth Proportional to 513,162.90, 768,577.95 and 263,553.30

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Solution

The fourth proportional to 513,162.90, 768,577.95 and 263,553.30 is: 394,730.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,162.90 : 768,577.95 = 263,553.30 : x
  2. Step 2: Convert to fraction form
    513,162.90/768,577.95 = 263,553.30/x
  3. Step 3: Cross multiply
    513,162.90x = 768,577.95 × 263,553.30
  4. Step 4: Simplify right side
    513,162.90x = 202,561,255,029.74
  5. Step 5: Solve for x
    x = 202,561,255,029.74/513,162.90
  6. Step 6: Final answer
    x = 394,730.90

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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.