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Finding the Fourth Proportional to 252,179.28, 348,020.28 and 139,001.76

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Solution

The fourth proportional to 252,179.28, 348,020.28 and 139,001.76 is: 191,829.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,179.28 : 348,020.28 = 139,001.76 : x
  2. Step 2: Convert to fraction form
    252,179.28/348,020.28 = 139,001.76/x
  3. Step 3: Cross multiply
    252,179.28x = 348,020.28 × 139,001.76
  4. Step 4: Simplify right side
    252,179.28x = 48,375,431,435.69
  5. Step 5: Solve for x
    x = 48,375,431,435.69/252,179.28
  6. Step 6: Final answer
    x = 191,829.52

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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.