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Finding the Fourth Proportional to 247,189.90, 341,131.25 and 139,753.53

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Solution

The fourth proportional to 247,189.90, 341,131.25 and 139,753.53 is: 192,865.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,189.90 : 341,131.25 = 139,753.53 : x
  2. Step 2: Convert to fraction form
    247,189.90/341,131.25 = 139,753.53/x
  3. Step 3: Cross multiply
    247,189.90x = 341,131.25 × 139,753.53
  4. Step 4: Simplify right side
    247,189.90x = 47,674,296,380.81
  5. Step 5: Solve for x
    x = 47,674,296,380.81/247,189.90
  6. Step 6: Final answer
    x = 192,865.07

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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.