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Finding the Fourth Proportional to 216,426.80, 324,640.20 and 200,680.40

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Solution

The fourth proportional to 216,426.80, 324,640.20 and 200,680.40 is: 301,020.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,426.80 : 324,640.20 = 200,680.40 : x
  2. Step 2: Convert to fraction form
    216,426.80/324,640.20 = 200,680.40/x
  3. Step 3: Cross multiply
    216,426.80x = 324,640.20 × 200,680.40
  4. Step 4: Simplify right side
    216,426.80x = 65,148,925,192.08
  5. Step 5: Solve for x
    x = 65,148,925,192.08/216,426.80
  6. Step 6: Final answer
    x = 301,020.60

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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.