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Finding the Fourth Proportional to 256,871.44, 385,212.39 and 88,344.87

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Solution

The fourth proportional to 256,871.44, 385,212.39 and 88,344.87 is: 132,484.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,871.44 : 385,212.39 = 88,344.87 : x
  2. Step 2: Convert to fraction form
    256,871.44/385,212.39 = 88,344.87/x
  3. Step 3: Cross multiply
    256,871.44x = 385,212.39 × 88,344.87
  4. Step 4: Simplify right side
    256,871.44x = 34,031,538,516.94
  5. Step 5: Solve for x
    x = 34,031,538,516.94/256,871.44
  6. Step 6: Final answer
    x = 132,484.71

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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.