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Finding the Fourth Proportional to 290,691.37, 401,163.20 and 175,991.05

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Solution

The fourth proportional to 290,691.37, 401,163.20 and 175,991.05 is: 242,873.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,691.37 : 401,163.20 = 175,991.05 : x
  2. Step 2: Convert to fraction form
    290,691.37/401,163.20 = 175,991.05/x
  3. Step 3: Cross multiply
    290,691.37x = 401,163.20 × 175,991.05
  4. Step 4: Simplify right side
    290,691.37x = 70,601,132,789.36
  5. Step 5: Solve for x
    x = 70,601,132,789.36/290,691.37
  6. Step 6: Final answer
    x = 242,873.16

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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.