Home / 280,486.58-420,932.86-109,733.52

Finding the Fourth Proportional to 280,486.58, 420,932.86 and 109,733.52

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Solution

The fourth proportional to 280,486.58, 420,932.86 and 109,733.52 is: 164,679.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,486.58 : 420,932.86 = 109,733.52 : x
  2. Step 2: Convert to fraction form
    280,486.58/420,932.86 = 109,733.52/x
  3. Step 3: Cross multiply
    280,486.58x = 420,932.86 × 109,733.52
  4. Step 4: Simplify right side
    280,486.58x = 46,190,444,411.47
  5. Step 5: Solve for x
    x = 46,190,444,411.47/280,486.58
  6. Step 6: Final answer
    x = 164,679.69

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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.