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Finding the Fourth Proportional to 217,345.92, 325,936.94 and 90,994.88

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Solution

The fourth proportional to 217,345.92, 325,936.94 and 90,994.88 is: 136,458.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,345.92 : 325,936.94 = 90,994.88 : x
  2. Step 2: Convert to fraction form
    217,345.92/325,936.94 = 90,994.88/x
  3. Step 3: Cross multiply
    217,345.92x = 325,936.94 × 90,994.88
  4. Step 4: Simplify right side
    217,345.92x = 29,658,592,742.87
  5. Step 5: Solve for x
    x = 29,658,592,742.87/217,345.92
  6. Step 6: Final answer
    x = 136,458.01

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1.5x scale

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.