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Finding the Fourth Proportional to 543,645.63, 815,108.52 and 259,380.06

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Solution

The fourth proportional to 543,645.63, 815,108.52 and 259,380.06 is: 388,898.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,645.63 : 815,108.52 = 259,380.06 : x
  2. Step 2: Convert to fraction form
    543,645.63/815,108.52 = 259,380.06/x
  3. Step 3: Cross multiply
    543,645.63x = 815,108.52 × 259,380.06
  4. Step 4: Simplify right side
    543,645.63x = 211,422,896,824.11
  5. Step 5: Solve for x
    x = 211,422,896,824.11/543,645.63
  6. Step 6: Final answer
    x = 388,898.37

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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.