Home / 211,622.20-317,433.30-208,511.80

Finding the Fourth Proportional to 211,622.20, 317,433.30 and 208,511.80

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Solution

The fourth proportional to 211,622.20, 317,433.30 and 208,511.80 is: 312,767.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,622.20 : 317,433.30 = 208,511.80 : x
  2. Step 2: Convert to fraction form
    211,622.20/317,433.30 = 208,511.80/x
  3. Step 3: Cross multiply
    211,622.20x = 317,433.30 × 208,511.80
  4. Step 4: Simplify right side
    211,622.20x = 66,188,588,762.94
  5. Step 5: Solve for x
    x = 66,188,588,762.94/211,622.20
  6. Step 6: Final answer
    x = 312,767.70

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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.