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Finding the Fourth Proportional to 205,995.90, 308,763.45 and 117,291.90

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Solution

The fourth proportional to 205,995.90, 308,763.45 and 117,291.90 is: 175,806.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,995.90 : 308,763.45 = 117,291.90 : x
  2. Step 2: Convert to fraction form
    205,995.90/308,763.45 = 117,291.90/x
  3. Step 3: Cross multiply
    205,995.90x = 308,763.45 × 117,291.90
  4. Step 4: Simplify right side
    205,995.90x = 36,215,451,701.06
  5. Step 5: Solve for x
    x = 36,215,451,701.06/205,995.90
  6. Step 6: Final answer
    x = 175,806.66

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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.