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Finding the Fourth Proportional to 228,447.50, 315,245.97 and 125,078.94

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Solution

The fourth proportional to 228,447.50, 315,245.97 and 125,078.94 is: 172,602.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,447.50 : 315,245.97 = 125,078.94 : x
  2. Step 2: Convert to fraction form
    228,447.50/315,245.97 = 125,078.94/x
  3. Step 3: Cross multiply
    228,447.50x = 315,245.97 × 125,078.94
  4. Step 4: Simplify right side
    228,447.50x = 39,430,631,766.87
  5. Step 5: Solve for x
    x = 39,430,631,766.87/228,447.50
  6. Step 6: Final answer
    x = 172,602.60

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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.