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Finding the Fourth Proportional to 203,433.80, 304,940.10 and 91,167.80

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Solution

The fourth proportional to 203,433.80, 304,940.10 and 91,167.80 is: 136,657.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,433.80 : 304,940.10 = 91,167.80 : x
  2. Step 2: Convert to fraction form
    203,433.80/304,940.10 = 91,167.80/x
  3. Step 3: Cross multiply
    203,433.80x = 304,940.10 × 91,167.80
  4. Step 4: Simplify right side
    203,433.80x = 27,800,718,048.78
  5. Step 5: Solve for x
    x = 27,800,718,048.78/203,433.80
  6. Step 6: Final answer
    x = 136,657.32

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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.