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Finding the Fourth Proportional to 259,037.95, 388,578.79 and 72,049.45

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Solution

The fourth proportional to 259,037.95, 388,578.79 and 72,049.45 is: 108,080.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,037.95 : 388,578.79 = 72,049.45 : x
  2. Step 2: Convert to fraction form
    259,037.95/388,578.79 = 72,049.45/x
  3. Step 3: Cross multiply
    259,037.95x = 388,578.79 × 72,049.45
  4. Step 4: Simplify right side
    259,037.95x = 27,996,888,101.17
  5. Step 5: Solve for x
    x = 27,996,888,101.17/259,037.95
  6. Step 6: Final answer
    x = 108,080.26

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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.