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Finding the Fourth Proportional to 398,660.14, 550,214.09 and 237,608.61

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Solution

The fourth proportional to 398,660.14, 550,214.09 and 237,608.61 is: 327,937.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,660.14 : 550,214.09 = 237,608.61 : x
  2. Step 2: Convert to fraction form
    398,660.14/550,214.09 = 237,608.61/x
  3. Step 3: Cross multiply
    398,660.14x = 550,214.09 × 237,608.61
  4. Step 4: Simplify right side
    398,660.14x = 130,735,605,127.32
  5. Step 5: Solve for x
    x = 130,735,605,127.32/398,660.14
  6. Step 6: Final answer
    x = 327,937.49

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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.