Home / 255,916.62-353,164.05-142,739.28

Finding the Fourth Proportional to 255,916.62, 353,164.05 and 142,739.28

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Solution

The fourth proportional to 255,916.62, 353,164.05 and 142,739.28 is: 196,979.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,916.62 : 353,164.05 = 142,739.28 : x
  2. Step 2: Convert to fraction form
    255,916.62/353,164.05 = 142,739.28/x
  3. Step 3: Cross multiply
    255,916.62x = 353,164.05 × 142,739.28
  4. Step 4: Simplify right side
    255,916.62x = 50,410,382,218.88
  5. Step 5: Solve for x
    x = 50,410,382,218.88/255,916.62
  6. Step 6: Final answer
    x = 196,979.71

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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.