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Finding the Fourth Proportional to 252,487.97, 348,440.69 and 139,318.01

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Solution

The fourth proportional to 252,487.97, 348,440.69 and 139,318.01 is: 192,262.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,487.97 : 348,440.69 = 139,318.01 : x
  2. Step 2: Convert to fraction form
    252,487.97/348,440.69 = 139,318.01/x
  3. Step 3: Cross multiply
    252,487.97x = 348,440.69 × 139,318.01
  4. Step 4: Simplify right side
    252,487.97x = 48,544,062,662.91
  5. Step 5: Solve for x
    x = 48,544,062,662.91/252,487.97
  6. Step 6: Final answer
    x = 192,262.87

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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.