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Finding the Fourth Proportional to 262,892.90, 394,339.35 and 122,665.70

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Solution

The fourth proportional to 262,892.90, 394,339.35 and 122,665.70 is: 183,998.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,892.90 : 394,339.35 = 122,665.70 : x
  2. Step 2: Convert to fraction form
    262,892.90/394,339.35 = 122,665.70/x
  3. Step 3: Cross multiply
    262,892.90x = 394,339.35 × 122,665.70
  4. Step 4: Simplify right side
    262,892.90x = 48,371,912,405.30
  5. Step 5: Solve for x
    x = 48,371,912,405.30/262,892.90
  6. Step 6: Final answer
    x = 183,998.55

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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.