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Finding the Fourth Proportional to 253,134.82, 349,333.05 and 139,961.62

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Solution

The fourth proportional to 253,134.82, 349,333.05 and 139,961.62 is: 193,150.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,134.82 : 349,333.05 = 139,961.62 : x
  2. Step 2: Convert to fraction form
    253,134.82/349,333.05 = 139,961.62/x
  3. Step 3: Cross multiply
    253,134.82x = 349,333.05 × 139,961.62
  4. Step 4: Simplify right side
    253,134.82x = 48,893,219,597.54
  5. Step 5: Solve for x
    x = 48,893,219,597.54/253,134.82
  6. Step 6: Final answer
    x = 193,150.91

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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.