Home / 257,293.12-355,067.22-142,575.28

Finding the Fourth Proportional to 257,293.12, 355,067.22 and 142,575.28

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Solution

The fourth proportional to 257,293.12, 355,067.22 and 142,575.28 is: 196,755.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,293.12 : 355,067.22 = 142,575.28 : x
  2. Step 2: Convert to fraction form
    257,293.12/355,067.22 = 142,575.28/x
  3. Step 3: Cross multiply
    257,293.12x = 355,067.22 × 142,575.28
  4. Step 4: Simplify right side
    257,293.12x = 50,623,808,310.32
  5. Step 5: Solve for x
    x = 50,623,808,310.32/257,293.12
  6. Step 6: Final answer
    x = 196,755.39

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1.5x scale

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.