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Finding the Fourth Proportional to 439,068.78, 605,942.91 and 269,279.82

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Solution

The fourth proportional to 439,068.78, 605,942.91 and 269,279.82 is: 371,623.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,068.78 : 605,942.91 = 269,279.82 : x
  2. Step 2: Convert to fraction form
    439,068.78/605,942.91 = 269,279.82/x
  3. Step 3: Cross multiply
    439,068.78x = 605,942.91 × 269,279.82
  4. Step 4: Simplify right side
    439,068.78x = 163,168,197,735.08
  5. Step 5: Solve for x
    x = 163,168,197,735.08/439,068.78
  6. Step 6: Final answer
    x = 371,623.32

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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.