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Finding the Fourth Proportional to 265,879.05, 399,077.78 and 132,909.45

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Solution

The fourth proportional to 265,879.05, 399,077.78 and 132,909.45 is: 199,493.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,879.05 : 399,077.78 = 132,909.45 : x
  2. Step 2: Convert to fraction form
    265,879.05/399,077.78 = 132,909.45/x
  3. Step 3: Cross multiply
    265,879.05x = 399,077.78 × 132,909.45
  4. Step 4: Simplify right side
    265,879.05x = 53,041,207,582.47
  5. Step 5: Solve for x
    x = 53,041,207,582.47/265,879.05
  6. Step 6: Final answer
    x = 199,493.75

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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.