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Finding the Fourth Proportional to 220,684.81, 331,230.17 and 171,083.65

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Solution

The fourth proportional to 220,684.81, 331,230.17 and 171,083.65 is: 256,782.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,684.81 : 331,230.17 = 171,083.65 : x
  2. Step 2: Convert to fraction form
    220,684.81/331,230.17 = 171,083.65/x
  3. Step 3: Cross multiply
    220,684.81x = 331,230.17 × 171,083.65
  4. Step 4: Simplify right side
    220,684.81x = 56,668,066,259.87
  5. Step 5: Solve for x
    x = 56,668,066,259.87/220,684.81
  6. Step 6: Final answer
    x = 256,782.81

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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.