Home / 211,768.16-317,691.20-69,621.44

Finding the Fourth Proportional to 211,768.16, 317,691.20 and 69,621.44

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Solution

The fourth proportional to 211,768.16, 317,691.20 and 69,621.44 is: 104,444.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,768.16 : 317,691.20 = 69,621.44 : x
  2. Step 2: Convert to fraction form
    211,768.16/317,691.20 = 69,621.44/x
  3. Step 3: Cross multiply
    211,768.16x = 317,691.20 × 69,621.44
  4. Step 4: Simplify right side
    211,768.16x = 22,118,118,819.33
  5. Step 5: Solve for x
    x = 22,118,118,819.33/211,768.16
  6. Step 6: Final answer
    x = 104,444.97

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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.