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Finding the Fourth Proportional to 543,252.60, 814,878.90 and 263,316.60

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Solution

The fourth proportional to 543,252.60, 814,878.90 and 263,316.60 is: 394,974.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,252.60 : 814,878.90 = 263,316.60 : x
  2. Step 2: Convert to fraction form
    543,252.60/814,878.90 = 263,316.60/x
  3. Step 3: Cross multiply
    543,252.60x = 814,878.90 × 263,316.60
  4. Step 4: Simplify right side
    543,252.60x = 214,571,141,359.74
  5. Step 5: Solve for x
    x = 214,571,141,359.74/543,252.60
  6. Step 6: Final answer
    x = 394,974.90

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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.