Home / 280,738.14-387,458.15-178,731.02

Finding the Fourth Proportional to 280,738.14, 387,458.15 and 178,731.02

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Solution

The fourth proportional to 280,738.14, 387,458.15 and 178,731.02 is: 246,673.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,738.14 : 387,458.15 = 178,731.02 : x
  2. Step 2: Convert to fraction form
    280,738.14/387,458.15 = 178,731.02/x
  3. Step 3: Cross multiply
    280,738.14x = 387,458.15 × 178,731.02
  4. Step 4: Simplify right side
    280,738.14x = 69,250,787,525.87
  5. Step 5: Solve for x
    x = 69,250,787,525.87/280,738.14
  6. Step 6: Final answer
    x = 246,673.96

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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.