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Finding the Fourth Proportional to 349,090.36, 482,028.78 and 284,569.72

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Solution

The fourth proportional to 349,090.36, 482,028.78 and 284,569.72 is: 392,937.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    349,090.36 : 482,028.78 = 284,569.72 : x
  2. Step 2: Convert to fraction form
    349,090.36/482,028.78 = 284,569.72/x
  3. Step 3: Cross multiply
    349,090.36x = 482,028.78 × 284,569.72
  4. Step 4: Simplify right side
    349,090.36x = 137,170,794,956.54
  5. Step 5: Solve for x
    x = 137,170,794,956.54/349,090.36
  6. Step 6: Final answer
    x = 392,937.79

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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.