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Finding the Fourth Proportional to 255,245.95, 382,868.90 and 68,252.59

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Solution

The fourth proportional to 255,245.95, 382,868.90 and 68,252.59 is: 102,378.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,245.95 : 382,868.90 = 68,252.59 : x
  2. Step 2: Convert to fraction form
    255,245.95/382,868.90 = 68,252.59/x
  3. Step 3: Cross multiply
    255,245.95x = 382,868.90 × 68,252.59
  4. Step 4: Simplify right side
    255,245.95x = 26,131,791,799.84
  5. Step 5: Solve for x
    x = 26,131,791,799.84/255,245.95
  6. Step 6: Final answer
    x = 102,378.87

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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.