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Finding the Fourth Proportional to 303,656.43, 455,761.05 and 161,620.95

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Solution

The fourth proportional to 303,656.43, 455,761.05 and 161,620.95 is: 242,578.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,656.43 : 455,761.05 = 161,620.95 : x
  2. Step 2: Convert to fraction form
    303,656.43/455,761.05 = 161,620.95/x
  3. Step 3: Cross multiply
    303,656.43x = 455,761.05 × 161,620.95
  4. Step 4: Simplify right side
    303,656.43x = 73,660,533,874.00
  5. Step 5: Solve for x
    x = 73,660,533,874.00/303,656.43
  6. Step 6: Final answer
    x = 242,578.54

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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.