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Finding the Fourth Proportional to 218,385.88, 301,371.55 and 122,894.18

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Solution

The fourth proportional to 218,385.88, 301,371.55 and 122,894.18 is: 169,593.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,385.88 : 301,371.55 = 122,894.18 : x
  2. Step 2: Convert to fraction form
    218,385.88/301,371.55 = 122,894.18/x
  3. Step 3: Cross multiply
    218,385.88x = 301,371.55 × 122,894.18
  4. Step 4: Simplify right side
    218,385.88x = 37,036,809,512.58
  5. Step 5: Solve for x
    x = 37,036,809,512.58/218,385.88
  6. Step 6: Final answer
    x = 169,593.43

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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.