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Finding the Fourth Proportional to 252,644.86, 348,640.77 and 139,465.18

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Solution

The fourth proportional to 252,644.86, 348,640.77 and 139,465.18 is: 192,456.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,644.86 : 348,640.77 = 139,465.18 : x
  2. Step 2: Convert to fraction form
    252,644.86/348,640.77 = 139,465.18/x
  3. Step 3: Cross multiply
    252,644.86x = 348,640.77 × 139,465.18
  4. Step 4: Simplify right side
    252,644.86x = 48,623,247,743.39
  5. Step 5: Solve for x
    x = 48,623,247,743.39/252,644.86
  6. Step 6: Final answer
    x = 192,456.90

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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.