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Finding the Fourth Proportional to 621,817.20, 932,725.80 and 222,489.30

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Solution

The fourth proportional to 621,817.20, 932,725.80 and 222,489.30 is: 333,733.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,817.20 : 932,725.80 = 222,489.30 : x
  2. Step 2: Convert to fraction form
    621,817.20/932,725.80 = 222,489.30/x
  3. Step 3: Cross multiply
    621,817.20x = 932,725.80 × 222,489.30
  4. Step 4: Simplify right side
    621,817.20x = 207,521,510,333.94
  5. Step 5: Solve for x
    x = 207,521,510,333.94/621,817.20
  6. Step 6: Final answer
    x = 333,733.95

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Double scale
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Similar ratio
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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.