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Finding the Fourth Proportional to 256,933.89, 385,391.60 and 67,392.74

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Solution

The fourth proportional to 256,933.89, 385,391.60 and 67,392.74 is: 101,086.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,933.89 : 385,391.60 = 67,392.74 : x
  2. Step 2: Convert to fraction form
    256,933.89/385,391.60 = 67,392.74/x
  3. Step 3: Cross multiply
    256,933.89x = 385,391.60 × 67,392.74
  4. Step 4: Simplify right side
    256,933.89x = 25,972,593,633.06
  5. Step 5: Solve for x
    x = 25,972,593,633.06/256,933.89
  6. Step 6: Final answer
    x = 101,086.68

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1.5x scale

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.