Home / 217,629.06-326,056.77-90,990.42

Finding the Fourth Proportional to 217,629.06, 326,056.77 and 90,990.42

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Solution

The fourth proportional to 217,629.06, 326,056.77 and 90,990.42 is: 136,323.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,629.06 : 326,056.77 = 90,990.42 : x
  2. Step 2: Convert to fraction form
    217,629.06/326,056.77 = 90,990.42/x
  3. Step 3: Cross multiply
    217,629.06x = 326,056.77 × 90,990.42
  4. Step 4: Simplify right side
    217,629.06x = 29,668,042,446.14
  5. Step 5: Solve for x
    x = 29,668,042,446.14/217,629.06
  6. Step 6: Final answer
    x = 136,323.90

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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.