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Finding the Fourth Proportional to 262,096.20, 393,435.90 and 143,998.20

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Solution

The fourth proportional to 262,096.20, 393,435.90 and 143,998.20 is: 216,157.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,096.20 : 393,435.90 = 143,998.20 : x
  2. Step 2: Convert to fraction form
    262,096.20/393,435.90 = 143,998.20/x
  3. Step 3: Cross multiply
    262,096.20x = 393,435.90 × 143,998.20
  4. Step 4: Simplify right side
    262,096.20x = 56,654,061,415.38
  5. Step 5: Solve for x
    x = 56,654,061,415.38/262,096.20
  6. Step 6: Final answer
    x = 216,157.51

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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.