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Finding the Fourth Proportional to 255,682.68, 383,523.78 and 68,694.18

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Solution

The fourth proportional to 255,682.68, 383,523.78 and 68,694.18 is: 103,041.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,682.68 : 383,523.78 = 68,694.18 : x
  2. Step 2: Convert to fraction form
    255,682.68/383,523.78 = 68,694.18/x
  3. Step 3: Cross multiply
    255,682.68x = 383,523.78 × 68,694.18
  4. Step 4: Simplify right side
    255,682.68x = 26,345,851,577.60
  5. Step 5: Solve for x
    x = 26,345,851,577.60/255,682.68
  6. Step 6: Final answer
    x = 103,041.21

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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.