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Finding the Fourth Proportional to 252,447.86, 348,378.03 and 139,270.61

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Solution

The fourth proportional to 252,447.86, 348,378.03 and 139,270.61 is: 192,193.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,447.86 : 348,378.03 = 139,270.61 : x
  2. Step 2: Convert to fraction form
    252,447.86/348,378.03 = 139,270.61/x
  3. Step 3: Cross multiply
    252,447.86x = 348,378.03 × 139,270.61
  4. Step 4: Simplify right side
    252,447.86x = 48,518,819,006.81
  5. Step 5: Solve for x
    x = 48,518,819,006.81/252,447.86
  6. Step 6: Final answer
    x = 192,193.43

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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.