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Finding the Fourth Proportional to 521,243.96, 781,879.60 and 179,683.77

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Solution

The fourth proportional to 521,243.96, 781,879.60 and 179,683.77 is: 269,530.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,243.96 : 781,879.60 = 179,683.77 : x
  2. Step 2: Convert to fraction form
    521,243.96/781,879.60 = 179,683.77/x
  3. Step 3: Cross multiply
    521,243.96x = 781,879.60 × 179,683.77
  4. Step 4: Simplify right side
    521,243.96x = 140,491,072,972.67
  5. Step 5: Solve for x
    x = 140,491,072,972.67/521,243.96
  6. Step 6: Final answer
    x = 269,530.36

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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.