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Finding the Fourth Proportional to 230,569.52, 318,186.52 and 128,601.60

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Solution

The fourth proportional to 230,569.52, 318,186.52 and 128,601.60 is: 177,470.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,569.52 : 318,186.52 = 128,601.60 : x
  2. Step 2: Convert to fraction form
    230,569.52/318,186.52 = 128,601.60/x
  3. Step 3: Cross multiply
    230,569.52x = 318,186.52 × 128,601.60
  4. Step 4: Simplify right side
    230,569.52x = 40,919,295,570.43
  5. Step 5: Solve for x
    x = 40,919,295,570.43/230,569.52
  6. Step 6: Final answer
    x = 177,470.53

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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.