Home / 257,621.94-355,488.30-142,872.75

Finding the Fourth Proportional to 257,621.94, 355,488.30 and 142,872.75

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Solution

The fourth proportional to 257,621.94, 355,488.30 and 142,872.75 is: 197,147.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,621.94 : 355,488.30 = 142,872.75 : x
  2. Step 2: Convert to fraction form
    257,621.94/355,488.30 = 142,872.75/x
  3. Step 3: Cross multiply
    257,621.94x = 355,488.30 × 142,872.75
  4. Step 4: Simplify right side
    257,621.94x = 50,789,591,013.83
  5. Step 5: Solve for x
    x = 50,789,591,013.83/257,621.94
  6. Step 6: Final answer
    x = 197,147.77

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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.