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Finding the Fourth Proportional to 252,309.69, 348,189.98 and 139,136.49

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Solution

The fourth proportional to 252,309.69, 348,189.98 and 139,136.49 is: 192,009.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,309.69 : 348,189.98 = 139,136.49 : x
  2. Step 2: Convert to fraction form
    252,309.69/348,189.98 = 139,136.49/x
  3. Step 3: Cross multiply
    252,309.69x = 348,189.98 × 139,136.49
  4. Step 4: Simplify right side
    252,309.69x = 48,445,930,974.69
  5. Step 5: Solve for x
    x = 48,445,930,974.69/252,309.69
  6. Step 6: Final answer
    x = 192,009.79

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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.