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Finding the Fourth Proportional to 215,687.71, 297,651.20 and 118,895

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Solution

The fourth proportional to 215,687.71, 297,651.20 and 118,895 is: 164,076.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,687.71 : 297,651.20 = 118,895 : x
  2. Step 2: Convert to fraction form
    215,687.71/297,651.20 = 118,895/x
  3. Step 3: Cross multiply
    215,687.71x = 297,651.20 × 118,895
  4. Step 4: Simplify right side
    215,687.71x = 35,389,239,424
  5. Step 5: Solve for x
    x = 35,389,239,424/215,687.71
  6. Step 6: Final answer
    x = 164,076.29

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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.