Home / 211,822.22-317,636.44-126,471.81

Finding the Fourth Proportional to 211,822.22, 317,636.44 and 126,471.81

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Solution

The fourth proportional to 211,822.22, 317,636.44 and 126,471.81 is: 189,649.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,822.22 : 317,636.44 = 126,471.81 : x
  2. Step 2: Convert to fraction form
    211,822.22/317,636.44 = 126,471.81/x
  3. Step 3: Cross multiply
    211,822.22x = 317,636.44 × 126,471.81
  4. Step 4: Simplify right side
    211,822.22x = 40,172,056,363.71
  5. Step 5: Solve for x
    x = 40,172,056,363.71/211,822.22
  6. Step 6: Final answer
    x = 189,649.87

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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.