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Finding the Fourth Proportional to 227,987.70, 341,981.55 and 209,325.30

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Solution

The fourth proportional to 227,987.70, 341,981.55 and 209,325.30 is: 313,987.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    227,987.70 : 341,981.55 = 209,325.30 : x
  2. Step 2: Convert to fraction form
    227,987.70/341,981.55 = 209,325.30/x
  3. Step 3: Cross multiply
    227,987.70x = 341,981.55 × 209,325.30
  4. Step 4: Simplify right side
    227,987.70x = 71,585,390,548.22
  5. Step 5: Solve for x
    x = 71,585,390,548.22/227,987.70
  6. Step 6: Final answer
    x = 313,987.95

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Similar ratio
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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.