Home / 268,206.20-402,309.30-143,790.20

Finding the Fourth Proportional to 268,206.20, 402,309.30 and 143,790.20

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Solution

The fourth proportional to 268,206.20, 402,309.30 and 143,790.20 is: 215,685.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,206.20 : 402,309.30 = 143,790.20 : x
  2. Step 2: Convert to fraction form
    268,206.20/402,309.30 = 143,790.20/x
  3. Step 3: Cross multiply
    268,206.20x = 402,309.30 × 143,790.20
  4. Step 4: Simplify right side
    268,206.20x = 57,848,134,708.86
  5. Step 5: Solve for x
    x = 57,848,134,708.86/268,206.20
  6. Step 6: Final answer
    x = 215,685.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.