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Finding the Fourth Proportional to 252,980.54, 349,099.40 and 139,796

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Solution

The fourth proportional to 252,980.54, 349,099.40 and 139,796 is: 192,910.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,980.54 : 349,099.40 = 139,796 : x
  2. Step 2: Convert to fraction form
    252,980.54/349,099.40 = 139,796/x
  3. Step 3: Cross multiply
    252,980.54x = 349,099.40 × 139,796
  4. Step 4: Simplify right side
    252,980.54x = 48,802,699,722.40
  5. Step 5: Solve for x
    x = 48,802,699,722.40/252,980.54
  6. Step 6: Final answer
    x = 192,910.88

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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.