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Finding the Fourth Proportional to 253,168.77, 349,372.03 and 139,991.52

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Solution

The fourth proportional to 253,168.77, 349,372.03 and 139,991.52 is: 193,187.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,168.77 : 349,372.03 = 139,991.52 : x
  2. Step 2: Convert to fraction form
    253,168.77/349,372.03 = 139,991.52/x
  3. Step 3: Cross multiply
    253,168.77x = 349,372.03 × 139,991.52
  4. Step 4: Simplify right side
    253,168.77x = 48,909,122,398.62
  5. Step 5: Solve for x
    x = 48,909,122,398.62/253,168.77
  6. Step 6: Final answer
    x = 193,187.82

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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.