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Finding the Fourth Proportional to 252,606, 348,596.31 and 139,428.78

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Solution

The fourth proportional to 252,606, 348,596.31 and 139,428.78 is: 192,411.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,606 : 348,596.31 = 139,428.78 : x
  2. Step 2: Convert to fraction form
    252,606/348,596.31 = 139,428.78/x
  3. Step 3: Cross multiply
    252,606x = 348,596.31 × 139,428.78
  4. Step 4: Simplify right side
    252,606x = 48,604,358,215.80
  5. Step 5: Solve for x
    x = 48,604,358,215.80/252,606
  6. Step 6: Final answer
    x = 192,411.73

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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.