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Finding the Fourth Proportional to 255,881.25, 383,821.88 and 68,892.75

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Solution

The fourth proportional to 255,881.25, 383,821.88 and 68,892.75 is: 103,339.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,881.25 : 383,821.88 = 68,892.75 : x
  2. Step 2: Convert to fraction form
    255,881.25/383,821.88 = 68,892.75/x
  3. Step 3: Cross multiply
    255,881.25x = 383,821.88 × 68,892.75
  4. Step 4: Simplify right side
    255,881.25x = 26,442,544,478.91
  5. Step 5: Solve for x
    x = 26,442,544,478.91/255,881.25
  6. Step 6: Final answer
    x = 103,339.13

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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.