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Finding the Fourth Proportional to 371,843.32, 557,831.94 and 135,517.72

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Solution

The fourth proportional to 371,843.32, 557,831.94 and 135,517.72 is: 203,300.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,843.32 : 557,831.94 = 135,517.72 : x
  2. Step 2: Convert to fraction form
    371,843.32/557,831.94 = 135,517.72/x
  3. Step 3: Cross multiply
    371,843.32x = 557,831.94 × 135,517.72
  4. Step 4: Simplify right side
    371,843.32x = 75,596,112,651.98
  5. Step 5: Solve for x
    x = 75,596,112,651.98/371,843.32
  6. Step 6: Final answer
    x = 203,300.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.