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Finding the Fourth Proportional to 371,690.52, 557,513.20 and 131,816.32

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Solution

The fourth proportional to 371,690.52, 557,513.20 and 131,816.32 is: 197,716.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,690.52 : 557,513.20 = 131,816.32 : x
  2. Step 2: Convert to fraction form
    371,690.52/557,513.20 = 131,816.32/x
  3. Step 3: Cross multiply
    371,690.52x = 557,513.20 × 131,816.32
  4. Step 4: Simplify right side
    371,690.52x = 73,489,338,375.42
  5. Step 5: Solve for x
    x = 73,489,338,375.42/371,690.52
  6. Step 6: Final answer
    x = 197,716.47

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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.