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Finding the Fourth Proportional to 339,087.06, 508,545.54 and 139,462.56

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Solution

The fourth proportional to 339,087.06, 508,545.54 and 139,462.56 is: 209,158.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,087.06 : 508,545.54 = 139,462.56 : x
  2. Step 2: Convert to fraction form
    339,087.06/508,545.54 = 139,462.56/x
  3. Step 3: Cross multiply
    339,087.06x = 508,545.54 × 139,462.56
  4. Step 4: Simplify right side
    339,087.06x = 70,923,062,884.98
  5. Step 5: Solve for x
    x = 70,923,062,884.98/339,087.06
  6. Step 6: Final answer
    x = 209,158.86

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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.