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Finding the Fourth Proportional to 388,348.58, 536,086.86 and 261,098

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Solution

The fourth proportional to 388,348.58, 536,086.86 and 261,098 is: 360,426.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,348.58 : 536,086.86 = 261,098 : x
  2. Step 2: Convert to fraction form
    388,348.58/536,086.86 = 261,098/x
  3. Step 3: Cross multiply
    388,348.58x = 536,086.86 × 261,098
  4. Step 4: Simplify right side
    388,348.58x = 139,971,206,972.28
  5. Step 5: Solve for x
    x = 139,971,206,972.28/388,348.58
  6. Step 6: Final answer
    x = 360,426.73

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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.