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Finding the Fourth Proportional to 342,067.60, 513,101.40 and 120,422.80

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Solution

The fourth proportional to 342,067.60, 513,101.40 and 120,422.80 is: 180,634.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,067.60 : 513,101.40 = 120,422.80 : x
  2. Step 2: Convert to fraction form
    342,067.60/513,101.40 = 120,422.80/x
  3. Step 3: Cross multiply
    342,067.60x = 513,101.40 × 120,422.80
  4. Step 4: Simplify right side
    342,067.60x = 61,789,107,271.92
  5. Step 5: Solve for x
    x = 61,789,107,271.92/342,067.60
  6. Step 6: Final answer
    x = 180,634.20

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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.