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Finding the Fourth Proportional to 256,768.08, 385,189.02 and 79,288.80

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Solution

The fourth proportional to 256,768.08, 385,189.02 and 79,288.80 is: 118,944.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,768.08 : 385,189.02 = 79,288.80 : x
  2. Step 2: Convert to fraction form
    256,768.08/385,189.02 = 79,288.80/x
  3. Step 3: Cross multiply
    256,768.08x = 385,189.02 × 79,288.80
  4. Step 4: Simplify right side
    256,768.08x = 30,541,175,168.98
  5. Step 5: Solve for x
    x = 30,541,175,168.98/256,768.08
  6. Step 6: Final answer
    x = 118,944.59

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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.