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Finding the Fourth Proportional to 253,241.46, 379,693.45 and 139,442.87

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Solution

The fourth proportional to 253,241.46, 379,693.45 and 139,442.87 is: 209,071.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,241.46 : 379,693.45 = 139,442.87 : x
  2. Step 2: Convert to fraction form
    253,241.46/379,693.45 = 139,442.87/x
  3. Step 3: Cross multiply
    253,241.46x = 379,693.45 × 139,442.87
  4. Step 4: Simplify right side
    253,241.46x = 52,945,544,388.20
  5. Step 5: Solve for x
    x = 52,945,544,388.20/253,241.46
  6. Step 6: Final answer
    x = 209,071.39

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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.