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Finding the Fourth Proportional to 228,807.71, 315,766.25 and 131,975.54

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Solution

The fourth proportional to 228,807.71, 315,766.25 and 131,975.54 is: 182,132.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,807.71 : 315,766.25 = 131,975.54 : x
  2. Step 2: Convert to fraction form
    228,807.71/315,766.25 = 131,975.54/x
  3. Step 3: Cross multiply
    228,807.71x = 315,766.25 × 131,975.54
  4. Step 4: Simplify right side
    228,807.71x = 41,673,419,118.82
  5. Step 5: Solve for x
    x = 41,673,419,118.82/228,807.71
  6. Step 6: Final answer
    x = 182,132.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.