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Finding the Fourth Proportional to 439,606.56, 659,402.64 and 140,083.12

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Solution

The fourth proportional to 439,606.56, 659,402.64 and 140,083.12 is: 210,122.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,606.56 : 659,402.64 = 140,083.12 : x
  2. Step 2: Convert to fraction form
    439,606.56/659,402.64 = 140,083.12/x
  3. Step 3: Cross multiply
    439,606.56x = 659,402.64 × 140,083.12
  4. Step 4: Simplify right side
    439,606.56x = 92,371,179,147.44
  5. Step 5: Solve for x
    x = 92,371,179,147.44/439,606.56
  6. Step 6: Final answer
    x = 210,122.39

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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.