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Finding the Fourth Proportional to 439,145.21, 605,992.24 and 245,568.88

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Solution

The fourth proportional to 439,145.21, 605,992.24 and 245,568.88 is: 338,869.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,145.21 : 605,992.24 = 245,568.88 : x
  2. Step 2: Convert to fraction form
    439,145.21/605,992.24 = 245,568.88/x
  3. Step 3: Cross multiply
    439,145.21x = 605,992.24 × 245,568.88
  4. Step 4: Simplify right side
    439,145.21x = 148,812,835,665.49
  5. Step 5: Solve for x
    x = 148,812,835,665.49/439,145.21
  6. Step 6: Final answer
    x = 338,869.31

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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.