Home / 259,037.28-388,577.88-72,048.78

Finding the Fourth Proportional to 259,037.28, 388,577.88 and 72,048.78

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Solution

The fourth proportional to 259,037.28, 388,577.88 and 72,048.78 is: 108,079.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,037.28 : 388,577.88 = 72,048.78 : x
  2. Step 2: Convert to fraction form
    259,037.28/388,577.88 = 72,048.78/x
  3. Step 3: Cross multiply
    259,037.28x = 388,577.88 × 72,048.78
  4. Step 4: Simplify right side
    259,037.28x = 27,996,562,188.99
  5. Step 5: Solve for x
    x = 27,996,562,188.99/259,037.28
  6. Step 6: Final answer
    x = 108,079.28

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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.