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Finding the Fourth Proportional to 388,648.32, 536,335.79 and 225,336.52

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Solution

The fourth proportional to 388,648.32, 536,335.79 and 225,336.52 is: 310,965.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,648.32 : 536,335.79 = 225,336.52 : x
  2. Step 2: Convert to fraction form
    388,648.32/536,335.79 = 225,336.52/x
  3. Step 3: Cross multiply
    388,648.32x = 536,335.79 × 225,336.52
  4. Step 4: Simplify right side
    388,648.32x = 120,856,040,470.05
  5. Step 5: Solve for x
    x = 120,856,040,470.05/388,648.32
  6. Step 6: Final answer
    x = 310,965.04

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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.