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Finding the Fourth Proportional to 492,977.78, 680,309.79 and 266,623.28

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Solution

The fourth proportional to 492,977.78, 680,309.79 and 266,623.28 is: 367,940.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,977.78 : 680,309.79 = 266,623.28 : x
  2. Step 2: Convert to fraction form
    492,977.78/680,309.79 = 266,623.28/x
  3. Step 3: Cross multiply
    492,977.78x = 680,309.79 × 266,623.28
  4. Step 4: Simplify right side
    492,977.78x = 181,386,427,625.91
  5. Step 5: Solve for x
    x = 181,386,427,625.91/492,977.78
  6. Step 6: Final answer
    x = 367,940.37

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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.