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Finding the Fourth Proportional to 500,660.33, 690,913.31 and 271,218.04

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Solution

The fourth proportional to 500,660.33, 690,913.31 and 271,218.04 is: 374,282.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,660.33 : 690,913.31 = 271,218.04 : x
  2. Step 2: Convert to fraction form
    500,660.33/690,913.31 = 271,218.04/x
  3. Step 3: Cross multiply
    500,660.33x = 690,913.31 × 271,218.04
  4. Step 4: Simplify right side
    500,660.33x = 187,388,150,664.74
  5. Step 5: Solve for x
    x = 187,388,150,664.74/500,660.33
  6. Step 6: Final answer
    x = 374,282.01

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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.