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Finding the Fourth Proportional to 490,331.39, 735,539.30 and 135,345.42

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Solution

The fourth proportional to 490,331.39, 735,539.30 and 135,345.42 is: 203,029.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,331.39 : 735,539.30 = 135,345.42 : x
  2. Step 2: Convert to fraction form
    490,331.39/735,539.30 = 135,345.42/x
  3. Step 3: Cross multiply
    490,331.39x = 735,539.30 × 135,345.42
  4. Step 4: Simplify right side
    490,331.39x = 99,551,874,808.28
  5. Step 5: Solve for x
    x = 99,551,874,808.28/490,331.39
  6. Step 6: Final answer
    x = 203,029.78

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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.