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Finding the Fourth Proportional to 252,181, 348,009.78 and 139,006.18

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Solution

The fourth proportional to 252,181, 348,009.78 and 139,006.18 is: 191,828.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,181 : 348,009.78 = 139,006.18 : x
  2. Step 2: Convert to fraction form
    252,181/348,009.78 = 139,006.18/x
  3. Step 3: Cross multiply
    252,181x = 348,009.78 × 139,006.18
  4. Step 4: Simplify right side
    252,181x = 48,375,510,120.44
  5. Step 5: Solve for x
    x = 48,375,510,120.44/252,181
  6. Step 6: Final answer
    x = 191,828.53

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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.