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Finding the Fourth Proportional to 492,589.11, 679,772.67 and 266,234.61

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Solution

The fourth proportional to 492,589.11, 679,772.67 and 266,234.61 is: 367,403.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,589.11 : 679,772.67 = 266,234.61 : x
  2. Step 2: Convert to fraction form
    492,589.11/679,772.67 = 266,234.61/x
  3. Step 3: Cross multiply
    492,589.11x = 679,772.67 × 266,234.61
  4. Step 4: Simplify right side
    492,589.11x = 180,979,014,734.45
  5. Step 5: Solve for x
    x = 180,979,014,734.45/492,589.11
  6. Step 6: Final answer
    x = 367,403.60

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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.