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Finding the Fourth Proportional to 270,051.74, 405,072.39 and 80,640.44

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Solution

The fourth proportional to 270,051.74, 405,072.39 and 80,640.44 is: 120,959.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,051.74 : 405,072.39 = 80,640.44 : x
  2. Step 2: Convert to fraction form
    270,051.74/405,072.39 = 80,640.44/x
  3. Step 3: Cross multiply
    270,051.74x = 405,072.39 × 80,640.44
  4. Step 4: Simplify right side
    270,051.74x = 32,665,215,358.25
  5. Step 5: Solve for x
    x = 32,665,215,358.25/270,051.74
  6. Step 6: Final answer
    x = 120,959.10

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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.