Home / 543,687.14-815,631.10-178,969.36

Finding the Fourth Proportional to 543,687.14, 815,631.10 and 178,969.36

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Solution

The fourth proportional to 543,687.14, 815,631.10 and 178,969.36 is: 268,487.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,687.14 : 815,631.10 = 178,969.36 : x
  2. Step 2: Convert to fraction form
    543,687.14/815,631.10 = 178,969.36/x
  3. Step 3: Cross multiply
    543,687.14x = 815,631.10 × 178,969.36
  4. Step 4: Simplify right side
    543,687.14x = 145,972,975,963.10
  5. Step 5: Solve for x
    x = 145,972,975,963.10/543,687.14
  6. Step 6: Final answer
    x = 268,487.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.