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Finding the Fourth Proportional to 262,442.70, 393,664.05 and 155,997.90

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Solution

The fourth proportional to 262,442.70, 393,664.05 and 155,997.90 is: 233,996.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,442.70 : 393,664.05 = 155,997.90 : x
  2. Step 2: Convert to fraction form
    262,442.70/393,664.05 = 155,997.90/x
  3. Step 3: Cross multiply
    262,442.70x = 393,664.05 × 155,997.90
  4. Step 4: Simplify right side
    262,442.70x = 61,410,765,105.50
  5. Step 5: Solve for x
    x = 61,410,765,105.50/262,442.70
  6. Step 6: Final answer
    x = 233,996.85

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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.