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Finding the Fourth Proportional to 325,511.70, 488,340.45 and 125,814.30

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Solution

The fourth proportional to 325,511.70, 488,340.45 and 125,814.30 is: 188,749.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,511.70 : 488,340.45 = 125,814.30 : x
  2. Step 2: Convert to fraction form
    325,511.70/488,340.45 = 125,814.30/x
  3. Step 3: Cross multiply
    325,511.70x = 488,340.45 × 125,814.30
  4. Step 4: Simplify right side
    325,511.70x = 61,440,211,878.44
  5. Step 5: Solve for x
    x = 61,440,211,878.44/325,511.70
  6. Step 6: Final answer
    x = 188,749.63

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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.