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Finding the Fourth Proportional to 215,714.87, 297,687.42 and 118,916.60

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Solution

The fourth proportional to 215,714.87, 297,687.42 and 118,916.60 is: 164,105.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,714.87 : 297,687.42 = 118,916.60 : x
  2. Step 2: Convert to fraction form
    215,714.87/297,687.42 = 118,916.60/x
  3. Step 3: Cross multiply
    215,714.87x = 297,687.42 × 118,916.60
  4. Step 4: Simplify right side
    215,714.87x = 35,399,975,849.17
  5. Step 5: Solve for x
    x = 35,399,975,849.17/215,714.87
  6. Step 6: Final answer
    x = 164,105.40

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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.