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Finding the Fourth Proportional to 308,283.78, 425,431.47 and 180,959.37

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Solution

The fourth proportional to 308,283.78, 425,431.47 and 180,959.37 is: 249,723.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,283.78 : 425,431.47 = 180,959.37 : x
  2. Step 2: Convert to fraction form
    308,283.78/425,431.47 = 180,959.37/x
  3. Step 3: Cross multiply
    308,283.78x = 425,431.47 × 180,959.37
  4. Step 4: Simplify right side
    308,283.78x = 76,985,810,789.37
  5. Step 5: Solve for x
    x = 76,985,810,789.37/308,283.78
  6. Step 6: Final answer
    x = 249,723.84

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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.