Home / 257,340.12-355,124.30-142,616.39

Finding the Fourth Proportional to 257,340.12, 355,124.30 and 142,616.39

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Solution

The fourth proportional to 257,340.12, 355,124.30 and 142,616.39 is: 196,807.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,340.12 : 355,124.30 = 142,616.39 : x
  2. Step 2: Convert to fraction form
    257,340.12/355,124.30 = 142,616.39/x
  3. Step 3: Cross multiply
    257,340.12x = 355,124.30 × 142,616.39
  4. Step 4: Simplify right side
    257,340.12x = 50,646,543,178.57
  5. Step 5: Solve for x
    x = 50,646,543,178.57/257,340.12
  6. Step 6: Final answer
    x = 196,807.80

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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.