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Finding the Fourth Proportional to 253,992.82, 350,514.12 and 139,281.90

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Solution

The fourth proportional to 253,992.82, 350,514.12 and 139,281.90 is: 192,211.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,992.82 : 350,514.12 = 139,281.90 : x
  2. Step 2: Convert to fraction form
    253,992.82/350,514.12 = 139,281.90/x
  3. Step 3: Cross multiply
    253,992.82x = 350,514.12 × 139,281.90
  4. Step 4: Simplify right side
    253,992.82x = 48,820,272,610.43
  5. Step 5: Solve for x
    x = 48,820,272,610.43/253,992.82
  6. Step 6: Final answer
    x = 192,211.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.