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Finding the Fourth Proportional to 274,806.80, 411,821.40 and 169,312.40

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Solution

The fourth proportional to 274,806.80, 411,821.40 and 169,312.40 is: 253,729.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,806.80 : 411,821.40 = 169,312.40 : x
  2. Step 2: Convert to fraction form
    274,806.80/411,821.40 = 169,312.40/x
  3. Step 3: Cross multiply
    274,806.80x = 411,821.40 × 169,312.40
  4. Step 4: Simplify right side
    274,806.80x = 69,726,469,605.36
  5. Step 5: Solve for x
    x = 69,726,469,605.36/274,806.80
  6. Step 6: Final answer
    x = 253,729.05

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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.