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Finding the Fourth Proportional to 303,309.80, 454,986.30 and 92,947.40

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Solution

The fourth proportional to 303,309.80, 454,986.30 and 92,947.40 is: 139,427.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,309.80 : 454,986.30 = 92,947.40 : x
  2. Step 2: Convert to fraction form
    303,309.80/454,986.30 = 92,947.40/x
  3. Step 3: Cross multiply
    303,309.80x = 454,986.30 × 92,947.40
  4. Step 4: Simplify right side
    303,309.80x = 42,289,793,620.62
  5. Step 5: Solve for x
    x = 42,289,793,620.62/303,309.80
  6. Step 6: Final answer
    x = 139,427.72

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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.