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Finding the Fourth Proportional to 403,129.62, 604,672.56 and 122,625

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Solution

The fourth proportional to 403,129.62, 604,672.56 and 122,625 is: 183,930.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,129.62 : 604,672.56 = 122,625 : x
  2. Step 2: Convert to fraction form
    403,129.62/604,672.56 = 122,625/x
  3. Step 3: Cross multiply
    403,129.62x = 604,672.56 × 122,625
  4. Step 4: Simplify right side
    403,129.62x = 74,147,972,670
  5. Step 5: Solve for x
    x = 74,147,972,670/403,129.62
  6. Step 6: Final answer
    x = 183,930.85

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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.