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Finding the Fourth Proportional to 492,991.12, 680,327.76 and 266,636.62

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Solution

The fourth proportional to 492,991.12, 680,327.76 and 266,636.62 is: 367,958.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,991.12 : 680,327.76 = 266,636.62 : x
  2. Step 2: Convert to fraction form
    492,991.12/680,327.76 = 266,636.62/x
  3. Step 3: Cross multiply
    492,991.12x = 680,327.76 × 266,636.62
  4. Step 4: Simplify right side
    492,991.12x = 181,400,294,418.57
  5. Step 5: Solve for x
    x = 181,400,294,418.57/492,991.12
  6. Step 6: Final answer
    x = 367,958.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.