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Finding the Fourth Proportional to 223,737.38, 308,771.37 and 128,258.43

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Solution

The fourth proportional to 223,737.38, 308,771.37 and 128,258.43 is: 177,004.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,737.38 : 308,771.37 = 128,258.43 : x
  2. Step 2: Convert to fraction form
    223,737.38/308,771.37 = 128,258.43/x
  3. Step 3: Cross multiply
    223,737.38x = 308,771.37 × 128,258.43
  4. Step 4: Simplify right side
    223,737.38x = 39,602,530,503.86
  5. Step 5: Solve for x
    x = 39,602,530,503.86/223,737.38
  6. Step 6: Final answer
    x = 177,004.53

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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.