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Finding the Fourth Proportional to 303,620.20, 455,430.30 and 204,087.40

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Solution

The fourth proportional to 303,620.20, 455,430.30 and 204,087.40 is: 306,131.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,620.20 : 455,430.30 = 204,087.40 : x
  2. Step 2: Convert to fraction form
    303,620.20/455,430.30 = 204,087.40/x
  3. Step 3: Cross multiply
    303,620.20x = 455,430.30 × 204,087.40
  4. Step 4: Simplify right side
    303,620.20x = 92,947,585,808.22
  5. Step 5: Solve for x
    x = 92,947,585,808.22/303,620.20
  6. Step 6: Final answer
    x = 306,131.10

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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.