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Finding the Fourth Proportional to 227,117.40, 340,712.10 and 77,371.80

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Solution

The fourth proportional to 227,117.40, 340,712.10 and 77,371.80 is: 116,069.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    227,117.40 : 340,712.10 = 77,371.80 : x
  2. Step 2: Convert to fraction form
    227,117.40/340,712.10 = 77,371.80/x
  3. Step 3: Cross multiply
    227,117.40x = 340,712.10 × 77,371.80
  4. Step 4: Simplify right side
    227,117.40x = 26,361,508,458.78
  5. Step 5: Solve for x
    x = 26,361,508,458.78/227,117.40
  6. Step 6: Final answer
    x = 116,069.96

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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.