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Finding the Fourth Proportional to 262,917.40, 394,230.30 and 104,967.40

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Solution

The fourth proportional to 262,917.40, 394,230.30 and 104,967.40 is: 157,392.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,917.40 : 394,230.30 = 104,967.40 : x
  2. Step 2: Convert to fraction form
    262,917.40/394,230.30 = 104,967.40/x
  3. Step 3: Cross multiply
    262,917.40x = 394,230.30 × 104,967.40
  4. Step 4: Simplify right side
    262,917.40x = 41,381,329,592.22
  5. Step 5: Solve for x
    x = 41,381,329,592.22/262,917.40
  6. Step 6: Final answer
    x = 157,392.89

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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.