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Finding the Fourth Proportional to 270,305.46, 405,515.43 and 80,780.58

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Solution

The fourth proportional to 270,305.46, 405,515.43 and 80,780.58 is: 121,187.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,305.46 : 405,515.43 = 80,780.58 : x
  2. Step 2: Convert to fraction form
    270,305.46/405,515.43 = 80,780.58/x
  3. Step 3: Cross multiply
    270,305.46x = 405,515.43 × 80,780.58
  4. Step 4: Simplify right side
    270,305.46x = 32,757,771,634.35
  5. Step 5: Solve for x
    x = 32,757,771,634.35/270,305.46
  6. Step 6: Final answer
    x = 121,187.98

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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.