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Finding the Fourth Proportional to 211,395.68, 317,093.52 and 71,142.56

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Solution

The fourth proportional to 211,395.68, 317,093.52 and 71,142.56 is: 106,713.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,395.68 : 317,093.52 = 71,142.56 : x
  2. Step 2: Convert to fraction form
    211,395.68/317,093.52 = 71,142.56/x
  3. Step 3: Cross multiply
    211,395.68x = 317,093.52 × 71,142.56
  4. Step 4: Simplify right side
    211,395.68x = 22,558,844,772.21
  5. Step 5: Solve for x
    x = 22,558,844,772.21/211,395.68
  6. Step 6: Final answer
    x = 106,713.84

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1.5x scale

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.