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Finding the Fourth Proportional to 322,486.78, 445,230.93 and 207,805.90

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Solution

The fourth proportional to 322,486.78, 445,230.93 and 207,805.90 is: 286,900.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,486.78 : 445,230.93 = 207,805.90 : x
  2. Step 2: Convert to fraction form
    322,486.78/445,230.93 = 207,805.90/x
  3. Step 3: Cross multiply
    322,486.78x = 445,230.93 × 207,805.90
  4. Step 4: Simplify right side
    322,486.78x = 92,521,614,116.49
  5. Step 5: Solve for x
    x = 92,521,614,116.49/322,486.78
  6. Step 6: Final answer
    x = 286,900.49

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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.