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Finding the Fourth Proportional to 216,613.83, 324,925.20 and 66,854.22

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Solution

The fourth proportional to 216,613.83, 324,925.20 and 66,854.22 is: 100,282.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,613.83 : 324,925.20 = 66,854.22 : x
  2. Step 2: Convert to fraction form
    216,613.83/324,925.20 = 66,854.22/x
  3. Step 3: Cross multiply
    216,613.83x = 324,925.20 × 66,854.22
  4. Step 4: Simplify right side
    216,613.83x = 21,722,620,804.34
  5. Step 5: Solve for x
    x = 21,722,620,804.34/216,613.83
  6. Step 6: Final answer
    x = 100,282.70

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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.