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Finding the Fourth Proportional to 217,881.84, 300,677.04 and 122,388.56

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Solution

The fourth proportional to 217,881.84, 300,677.04 and 122,388.56 is: 168,896.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,881.84 : 300,677.04 = 122,388.56 : x
  2. Step 2: Convert to fraction form
    217,881.84/300,677.04 = 122,388.56/x
  3. Step 3: Cross multiply
    217,881.84x = 300,677.04 × 122,388.56
  4. Step 4: Simplify right side
    217,881.84x = 36,799,429,950.66
  5. Step 5: Solve for x
    x = 36,799,429,950.66/217,881.84
  6. Step 6: Final answer
    x = 168,896.27

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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.