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Finding the Fourth Proportional to 328,849.56, 493,325.82 and 139,310.37

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Solution

The fourth proportional to 328,849.56, 493,325.82 and 139,310.37 is: 208,987.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,849.56 : 493,325.82 = 139,310.37 : x
  2. Step 2: Convert to fraction form
    328,849.56/493,325.82 = 139,310.37/x
  3. Step 3: Cross multiply
    328,849.56x = 493,325.82 × 139,310.37
  4. Step 4: Simplify right side
    328,849.56x = 68,725,402,514.75
  5. Step 5: Solve for x
    x = 68,725,402,514.75/328,849.56
  6. Step 6: Final answer
    x = 208,987.36

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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.