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Finding the Fourth Proportional to 325,415.70, 488,196.45 and 125,718.30

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Solution

The fourth proportional to 325,415.70, 488,196.45 and 125,718.30 is: 188,605.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,415.70 : 488,196.45 = 125,718.30 : x
  2. Step 2: Convert to fraction form
    325,415.70/488,196.45 = 125,718.30/x
  3. Step 3: Cross multiply
    325,415.70x = 488,196.45 × 125,718.30
  4. Step 4: Simplify right side
    325,415.70x = 61,375,227,760.04
  5. Step 5: Solve for x
    x = 61,375,227,760.04/325,415.70
  6. Step 6: Final answer
    x = 188,605.61

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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.