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Finding the Fourth Proportional to 227,649.60, 340,696.80 and 208,987.20

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Solution

The fourth proportional to 227,649.60, 340,696.80 and 208,987.20 is: 312,766.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    227,649.60 : 340,696.80 = 208,987.20 : x
  2. Step 2: Convert to fraction form
    227,649.60/340,696.80 = 208,987.20/x
  3. Step 3: Cross multiply
    227,649.60x = 340,696.80 × 208,987.20
  4. Step 4: Simplify right side
    227,649.60x = 71,201,270,280.96
  5. Step 5: Solve for x
    x = 71,201,270,280.96/227,649.60
  6. Step 6: Final answer
    x = 312,766.95

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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.