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Finding the Fourth Proportional to 217,987.20, 326,980.80 and 183,772.80

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Solution

The fourth proportional to 217,987.20, 326,980.80 and 183,772.80 is: 275,659.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,987.20 : 326,980.80 = 183,772.80 : x
  2. Step 2: Convert to fraction form
    217,987.20/326,980.80 = 183,772.80/x
  3. Step 3: Cross multiply
    217,987.20x = 326,980.80 × 183,772.80
  4. Step 4: Simplify right side
    217,987.20x = 60,090,177,162.24
  5. Step 5: Solve for x
    x = 60,090,177,162.24/217,987.20
  6. Step 6: Final answer
    x = 275,659.20

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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.