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Finding the Fourth Proportional to 252,599.68, 348,585.33 and 139,420

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Solution

The fourth proportional to 252,599.68, 348,585.33 and 139,420 is: 192,398.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,599.68 : 348,585.33 = 139,420 : x
  2. Step 2: Convert to fraction form
    252,599.68/348,585.33 = 139,420/x
  3. Step 3: Cross multiply
    252,599.68x = 348,585.33 × 139,420
  4. Step 4: Simplify right side
    252,599.68x = 48,599,766,708.60
  5. Step 5: Solve for x
    x = 48,599,766,708.60/252,599.68
  6. Step 6: Final answer
    x = 192,398.37

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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.