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Finding the Fourth Proportional to 303,486.20, 455,229.30 and 146,022.20

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Solution

The fourth proportional to 303,486.20, 455,229.30 and 146,022.20 is: 219,033.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,486.20 : 455,229.30 = 146,022.20 : x
  2. Step 2: Convert to fraction form
    303,486.20/455,229.30 = 146,022.20/x
  3. Step 3: Cross multiply
    303,486.20x = 455,229.30 × 146,022.20
  4. Step 4: Simplify right side
    303,486.20x = 66,473,583,890.46
  5. Step 5: Solve for x
    x = 66,473,583,890.46/303,486.20
  6. Step 6: Final answer
    x = 219,033.30

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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.