Home / 211,288.14-316,865.28-69,100.56

Finding the Fourth Proportional to 211,288.14, 316,865.28 and 69,100.56

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Solution

The fourth proportional to 211,288.14, 316,865.28 and 69,100.56 is: 103,628.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,288.14 : 316,865.28 = 69,100.56 : x
  2. Step 2: Convert to fraction form
    211,288.14/316,865.28 = 69,100.56/x
  3. Step 3: Cross multiply
    211,288.14x = 316,865.28 × 69,100.56
  4. Step 4: Simplify right side
    211,288.14x = 21,895,568,292.56
  5. Step 5: Solve for x
    x = 21,895,568,292.56/211,288.14
  6. Step 6: Final answer
    x = 103,628.95

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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.