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Finding the Fourth Proportional to 438,992.64, 605,809.28 and 237,789.44

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Solution

The fourth proportional to 438,992.64, 605,809.28 and 237,789.44 is: 328,149.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,992.64 : 605,809.28 = 237,789.44 : x
  2. Step 2: Convert to fraction form
    438,992.64/605,809.28 = 237,789.44/x
  3. Step 3: Cross multiply
    438,992.64x = 605,809.28 × 237,789.44
  4. Step 4: Simplify right side
    438,992.64x = 144,055,049,438.00
  5. Step 5: Solve for x
    x = 144,055,049,438.00/438,992.64
  6. Step 6: Final answer
    x = 328,149.12

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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.