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Finding the Fourth Proportional to 321,956.10, 482,778.63 and 188,879.58

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Solution

The fourth proportional to 321,956.10, 482,778.63 and 188,879.58 is: 283,228.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,956.10 : 482,778.63 = 188,879.58 : x
  2. Step 2: Convert to fraction form
    321,956.10/482,778.63 = 188,879.58/x
  3. Step 3: Cross multiply
    321,956.10x = 482,778.63 × 188,879.58
  4. Step 4: Simplify right side
    321,956.10x = 91,187,024,867.38
  5. Step 5: Solve for x
    x = 91,187,024,867.38/321,956.10
  6. Step 6: Final answer
    x = 283,228.13

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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.