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Finding the Fourth Proportional to 262,940.30, 394,410.45 and 218,617.10

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Solution

The fourth proportional to 262,940.30, 394,410.45 and 218,617.10 is: 327,925.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,940.30 : 394,410.45 = 218,617.10 : x
  2. Step 2: Convert to fraction form
    262,940.30/394,410.45 = 218,617.10/x
  3. Step 3: Cross multiply
    262,940.30x = 394,410.45 × 218,617.10
  4. Step 4: Simplify right side
    262,940.30x = 86,224,868,788.70
  5. Step 5: Solve for x
    x = 86,224,868,788.70/262,940.30
  6. Step 6: Final answer
    x = 327,925.65

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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.