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Finding the Fourth Proportional to 303,755.40, 455,414.40 and 170,676.45

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Solution

The fourth proportional to 303,755.40, 455,414.40 and 170,676.45 is: 255,891.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,755.40 : 455,414.40 = 170,676.45 : x
  2. Step 2: Convert to fraction form
    303,755.40/455,414.40 = 170,676.45/x
  3. Step 3: Cross multiply
    303,755.40x = 455,414.40 × 170,676.45
  4. Step 4: Simplify right side
    303,755.40x = 77,728,513,070.88
  5. Step 5: Solve for x
    x = 77,728,513,070.88/303,755.40
  6. Step 6: Final answer
    x = 255,891.79

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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.