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Finding the Fourth Proportional to 256,771.52, 385,192.80 and 79,292.48

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Solution

The fourth proportional to 256,771.52, 385,192.80 and 79,292.48 is: 118,949.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,771.52 : 385,192.80 = 79,292.48 : x
  2. Step 2: Convert to fraction form
    256,771.52/385,192.80 = 79,292.48/x
  3. Step 3: Cross multiply
    256,771.52x = 385,192.80 × 79,292.48
  4. Step 4: Simplify right side
    256,771.52x = 30,542,892,390.14
  5. Step 5: Solve for x
    x = 30,542,892,390.14/256,771.52
  6. Step 6: Final answer
    x = 118,949.69

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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.