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Finding the Fourth Proportional to 216,462.30, 324,744.65 and 68,718.30

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Solution

The fourth proportional to 216,462.30, 324,744.65 and 68,718.30 is: 103,093.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,462.30 : 324,744.65 = 68,718.30 : x
  2. Step 2: Convert to fraction form
    216,462.30/324,744.65 = 68,718.30/x
  3. Step 3: Cross multiply
    216,462.30x = 324,744.65 × 68,718.30
  4. Step 4: Simplify right side
    216,462.30x = 22,315,900,282.10
  5. Step 5: Solve for x
    x = 22,315,900,282.10/216,462.30
  6. Step 6: Final answer
    x = 103,093.70

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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.