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Finding the Fourth Proportional to 263,918.64, 395,872.20 and 64,240.08

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Solution

The fourth proportional to 263,918.64, 395,872.20 and 64,240.08 is: 96,358.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,918.64 : 395,872.20 = 64,240.08 : x
  2. Step 2: Convert to fraction form
    263,918.64/395,872.20 = 64,240.08/x
  3. Step 3: Cross multiply
    263,918.64x = 395,872.20 × 64,240.08
  4. Step 4: Simplify right side
    263,918.64x = 25,430,861,797.78
  5. Step 5: Solve for x
    x = 25,430,861,797.78/263,918.64
  6. Step 6: Final answer
    x = 96,358.72

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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.