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Finding the Fourth Proportional to 263,393.72, 395,050.48 and 85,900.44

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Solution

The fourth proportional to 263,393.72, 395,050.48 and 85,900.44 is: 128,837.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,393.72 : 395,050.48 = 85,900.44 : x
  2. Step 2: Convert to fraction form
    263,393.72/395,050.48 = 85,900.44/x
  3. Step 3: Cross multiply
    263,393.72x = 395,050.48 × 85,900.44
  4. Step 4: Simplify right side
    263,393.72x = 33,935,009,624.71
  5. Step 5: Solve for x
    x = 33,935,009,624.71/263,393.72
  6. Step 6: Final answer
    x = 128,837.58

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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.