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Finding the Fourth Proportional to 293,387.40, 440,372.70 and 143,796.60

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Solution

The fourth proportional to 293,387.40, 440,372.70 and 143,796.60 is: 215,837.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,387.40 : 440,372.70 = 143,796.60 : x
  2. Step 2: Convert to fraction form
    293,387.40/440,372.70 = 143,796.60/x
  3. Step 3: Cross multiply
    293,387.40x = 440,372.70 × 143,796.60
  4. Step 4: Simplify right side
    293,387.40x = 63,324,096,992.82
  5. Step 5: Solve for x
    x = 63,324,096,992.82/293,387.40
  6. Step 6: Final answer
    x = 215,837.82

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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.