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Finding the Fourth Proportional to 253,934.89, 350,427.90 and 139,211.44

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Solution

The fourth proportional to 253,934.89, 350,427.90 and 139,211.44 is: 192,110.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,934.89 : 350,427.90 = 139,211.44 : x
  2. Step 2: Convert to fraction form
    253,934.89/350,427.90 = 139,211.44/x
  3. Step 3: Cross multiply
    253,934.89x = 350,427.90 × 139,211.44
  4. Step 4: Simplify right side
    253,934.89x = 48,783,572,575.18
  5. Step 5: Solve for x
    x = 48,783,572,575.18/253,934.89
  6. Step 6: Final answer
    x = 192,110.55

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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.