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Finding the Fourth Proportional to 252,212.96, 348,069.12 and 139,035.20

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Solution

The fourth proportional to 252,212.96, 348,069.12 and 139,035.20 is: 191,876.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,212.96 : 348,069.12 = 139,035.20 : x
  2. Step 2: Convert to fraction form
    252,212.96/348,069.12 = 139,035.20/x
  3. Step 3: Cross multiply
    252,212.96x = 348,069.12 × 139,035.20
  4. Step 4: Simplify right side
    252,212.96x = 48,393,859,713.02
  5. Step 5: Solve for x
    x = 48,393,859,713.02/252,212.96
  6. Step 6: Final answer
    x = 191,876.97

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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.