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Finding the Fourth Proportional to 211,485.66, 317,101.77 and 67,329.18

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Solution

The fourth proportional to 211,485.66, 317,101.77 and 67,329.18 is: 100,953.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,485.66 : 317,101.77 = 67,329.18 : x
  2. Step 2: Convert to fraction form
    211,485.66/317,101.77 = 67,329.18/x
  3. Step 3: Cross multiply
    211,485.66x = 317,101.77 × 67,329.18
  4. Step 4: Simplify right side
    211,485.66x = 21,350,202,150.65
  5. Step 5: Solve for x
    x = 21,350,202,150.65/211,485.66
  6. Step 6: Final answer
    x = 100,953.43

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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.