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Finding the Fourth Proportional to 217,808.25, 326,796.13 and 105,479.83

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Solution

The fourth proportional to 217,808.25, 326,796.13 and 105,479.83 is: 158,260.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,808.25 : 326,796.13 = 105,479.83 : x
  2. Step 2: Convert to fraction form
    217,808.25/326,796.13 = 105,479.83/x
  3. Step 3: Cross multiply
    217,808.25x = 326,796.13 × 105,479.83
  4. Step 4: Simplify right side
    217,808.25x = 34,470,400,237.06
  5. Step 5: Solve for x
    x = 34,470,400,237.06/217,808.25
  6. Step 6: Final answer
    x = 158,260.31

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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.