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Finding the Fourth Proportional to 322,488.78, 445,233.69 and 207,807.90

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Solution

The fourth proportional to 322,488.78, 445,233.69 and 207,807.90 is: 286,903.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,488.78 : 445,233.69 = 207,807.90 : x
  2. Step 2: Convert to fraction form
    322,488.78/445,233.69 = 207,807.90/x
  3. Step 3: Cross multiply
    322,488.78x = 445,233.69 × 207,807.90
  4. Step 4: Simplify right side
    322,488.78x = 92,523,078,128.15
  5. Step 5: Solve for x
    x = 92,523,078,128.15/322,488.78
  6. Step 6: Final answer
    x = 286,903.25

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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.