Home / 217,976.60-326,746.20-99,732.80

Finding the Fourth Proportional to 217,976.60, 326,746.20 and 99,732.80

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Solution

The fourth proportional to 217,976.60, 326,746.20 and 99,732.80 is: 149,499.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,976.60 : 326,746.20 = 99,732.80 : x
  2. Step 2: Convert to fraction form
    217,976.60/326,746.20 = 99,732.80/x
  3. Step 3: Cross multiply
    217,976.60x = 326,746.20 × 99,732.80
  4. Step 4: Simplify right side
    217,976.60x = 32,587,313,415.36
  5. Step 5: Solve for x
    x = 32,587,313,415.36/217,976.60
  6. Step 6: Final answer
    x = 149,499.14

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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.