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Finding the Fourth Proportional to 211,660.70, 317,588.24 and 91,754.24

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Solution

The fourth proportional to 211,660.70, 317,588.24 and 91,754.24 is: 137,673.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,660.70 : 317,588.24 = 91,754.24 : x
  2. Step 2: Convert to fraction form
    211,660.70/317,588.24 = 91,754.24/x
  3. Step 3: Cross multiply
    211,660.70x = 317,588.24 × 91,754.24
  4. Step 4: Simplify right side
    211,660.70x = 29,140,066,235.58
  5. Step 5: Solve for x
    x = 29,140,066,235.58/211,660.70
  6. Step 6: Final answer
    x = 137,673.49

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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.