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Finding the Fourth Proportional to 264,575.12, 396,917.34 and 87,092.78

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Solution

The fourth proportional to 264,575.12, 396,917.34 and 87,092.78 is: 130,657.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,575.12 : 396,917.34 = 87,092.78 : x
  2. Step 2: Convert to fraction form
    264,575.12/396,917.34 = 87,092.78/x
  3. Step 3: Cross multiply
    264,575.12x = 396,917.34 × 87,092.78
  4. Step 4: Simplify right side
    264,575.12x = 34,568,634,570.81
  5. Step 5: Solve for x
    x = 34,568,634,570.81/264,575.12
  6. Step 6: Final answer
    x = 130,657.16

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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.