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Finding the Fourth Proportional to 399,163.54, 550,831.98 and 237,935.47

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Solution

The fourth proportional to 399,163.54, 550,831.98 and 237,935.47 is: 328,342.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,163.54 : 550,831.98 = 237,935.47 : x
  2. Step 2: Convert to fraction form
    399,163.54/550,831.98 = 237,935.47/x
  3. Step 3: Cross multiply
    399,163.54x = 550,831.98 × 237,935.47
  4. Step 4: Simplify right side
    399,163.54x = 131,062,466,052.33
  5. Step 5: Solve for x
    x = 131,062,466,052.33/399,163.54
  6. Step 6: Final answer
    x = 328,342.78

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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.