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Finding the Fourth Proportional to 492,672.21, 679,887.83 and 266,317.71

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Solution

The fourth proportional to 492,672.21, 679,887.83 and 266,317.71 is: 367,518.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,672.21 : 679,887.83 = 266,317.71 : x
  2. Step 2: Convert to fraction form
    492,672.21/679,887.83 = 266,317.71/x
  3. Step 3: Cross multiply
    492,672.21x = 679,887.83 × 266,317.71
  4. Step 4: Simplify right side
    492,672.21x = 181,066,166,560.65
  5. Step 5: Solve for x
    x = 181,066,166,560.65/492,672.21
  6. Step 6: Final answer
    x = 367,518.53

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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.