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Finding the Fourth Proportional to 455,956.47, 682,906.77 and 219,476.16

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Solution

The fourth proportional to 455,956.47, 682,906.77 and 219,476.16 is: 328,719.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,956.47 : 682,906.77 = 219,476.16 : x
  2. Step 2: Convert to fraction form
    455,956.47/682,906.77 = 219,476.16/x
  3. Step 3: Cross multiply
    455,956.47x = 682,906.77 × 219,476.16
  4. Step 4: Simplify right side
    455,956.47x = 149,881,755,517.60
  5. Step 5: Solve for x
    x = 149,881,755,517.60/455,956.47
  6. Step 6: Final answer
    x = 328,719.44

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.