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Finding the Fourth Proportional to 451,279.80, 677,178.90 and 170,998.20

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Solution

The fourth proportional to 451,279.80, 677,178.90 and 170,998.20 is: 256,595.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,279.80 : 677,178.90 = 170,998.20 : x
  2. Step 2: Convert to fraction form
    451,279.80/677,178.90 = 170,998.20/x
  3. Step 3: Cross multiply
    451,279.80x = 677,178.90 × 170,998.20
  4. Step 4: Simplify right side
    451,279.80x = 115,796,372,977.98
  5. Step 5: Solve for x
    x = 115,796,372,977.98/451,279.80
  6. Step 6: Final answer
    x = 256,595.52

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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.