Home / 211,469.90-317,235-69,284.78

Finding the Fourth Proportional to 211,469.90, 317,235 and 69,284.78

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Solution

The fourth proportional to 211,469.90, 317,235 and 69,284.78 is: 103,937.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,469.90 : 317,235 = 69,284.78 : x
  2. Step 2: Convert to fraction form
    211,469.90/317,235 = 69,284.78/x
  3. Step 3: Cross multiply
    211,469.90x = 317,235 × 69,284.78
  4. Step 4: Simplify right side
    211,469.90x = 21,979,555,597.13
  5. Step 5: Solve for x
    x = 21,979,555,597.13/211,469.90
  6. Step 6: Final answer
    x = 103,937.04

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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.