Home / 280,710.22-421,067.15-112,244.70

Finding the Fourth Proportional to 280,710.22, 421,067.15 and 112,244.70

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Solution

The fourth proportional to 280,710.22, 421,067.15 and 112,244.70 is: 168,367.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,710.22 : 421,067.15 = 112,244.70 : x
  2. Step 2: Convert to fraction form
    280,710.22/421,067.15 = 112,244.70/x
  3. Step 3: Cross multiply
    280,710.22x = 421,067.15 × 112,244.70
  4. Step 4: Simplify right side
    280,710.22x = 47,262,555,931.61
  5. Step 5: Solve for x
    x = 47,262,555,931.61/280,710.22
  6. Step 6: Final answer
    x = 168,367.78

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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.