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Finding the Fourth Proportional to 263,472.78, 395,250.48 and 85,938.80

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Solution

The fourth proportional to 263,472.78, 395,250.48 and 85,938.80 is: 128,921.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,472.78 : 395,250.48 = 85,938.80 : x
  2. Step 2: Convert to fraction form
    263,472.78/395,250.48 = 85,938.80/x
  3. Step 3: Cross multiply
    263,472.78x = 395,250.48 × 85,938.80
  4. Step 4: Simplify right side
    263,472.78x = 33,967,349,544.68
  5. Step 5: Solve for x
    x = 33,967,349,544.68/263,472.78
  6. Step 6: Final answer
    x = 128,921.67

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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.