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Finding the Fourth Proportional to 308,285.78, 425,434.23 and 180,961.37

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Solution

The fourth proportional to 308,285.78, 425,434.23 and 180,961.37 is: 249,726.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,285.78 : 425,434.23 = 180,961.37 : x
  2. Step 2: Convert to fraction form
    308,285.78/425,434.23 = 180,961.37/x
  3. Step 3: Cross multiply
    308,285.78x = 425,434.23 × 180,961.37
  4. Step 4: Simplify right side
    308,285.78x = 76,987,161,105.70
  5. Step 5: Solve for x
    x = 76,987,161,105.70/308,285.78
  6. Step 6: Final answer
    x = 249,726.60

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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.