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Finding the Fourth Proportional to 439,043.28, 605,879.64 and 237,839.28

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Solution

The fourth proportional to 439,043.28, 605,879.64 and 237,839.28 is: 328,218.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,043.28 : 605,879.64 = 237,839.28 : x
  2. Step 2: Convert to fraction form
    439,043.28/605,879.64 = 237,839.28/x
  3. Step 3: Cross multiply
    439,043.28x = 605,879.64 × 237,839.28
  4. Step 4: Simplify right side
    439,043.28x = 144,101,977,344.26
  5. Step 5: Solve for x
    x = 144,101,977,344.26/439,043.28
  6. Step 6: Final answer
    x = 328,218.16

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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.