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Finding the Fourth Proportional to 265,997.12, 399,142.56 and 108,336.56

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Solution

The fourth proportional to 265,997.12, 399,142.56 and 108,336.56 is: 162,564.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,997.12 : 399,142.56 = 108,336.56 : x
  2. Step 2: Convert to fraction form
    265,997.12/399,142.56 = 108,336.56/x
  3. Step 3: Cross multiply
    265,997.12x = 399,142.56 × 108,336.56
  4. Step 4: Simplify right side
    265,997.12x = 43,241,731,899.99
  5. Step 5: Solve for x
    x = 43,241,731,899.99/265,997.12
  6. Step 6: Final answer
    x = 162,564.66

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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.