Home / 262,486.20-393,470.10-129,257.40

Finding the Fourth Proportional to 262,486.20, 393,470.10 and 129,257.40

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Solution

The fourth proportional to 262,486.20, 393,470.10 and 129,257.40 is: 193,758.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,486.20 : 393,470.10 = 129,257.40 : x
  2. Step 2: Convert to fraction form
    262,486.20/393,470.10 = 129,257.40/x
  3. Step 3: Cross multiply
    262,486.20x = 393,470.10 × 129,257.40
  4. Step 4: Simplify right side
    262,486.20x = 50,858,922,103.74
  5. Step 5: Solve for x
    x = 50,858,922,103.74/262,486.20
  6. Step 6: Final answer
    x = 193,758.46

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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.