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Finding the Fourth Proportional to 215,878.48, 297,933.72 and 161,335.92

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Solution

The fourth proportional to 215,878.48, 297,933.72 and 161,335.92 is: 222,659.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,878.48 : 297,933.72 = 161,335.92 : x
  2. Step 2: Convert to fraction form
    215,878.48/297,933.72 = 161,335.92/x
  3. Step 3: Cross multiply
    215,878.48x = 297,933.72 × 161,335.92
  4. Step 4: Simplify right side
    215,878.48x = 48,067,410,815.22
  5. Step 5: Solve for x
    x = 48,067,410,815.22/215,878.48
  6. Step 6: Final answer
    x = 222,659.58

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1.5x scale

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.