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Finding the Fourth Proportional to 253,753.21, 350,179.25 and 139,039.29

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Solution

The fourth proportional to 253,753.21, 350,179.25 and 139,039.29 is: 191,874.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,753.21 : 350,179.25 = 139,039.29 : x
  2. Step 2: Convert to fraction form
    253,753.21/350,179.25 = 139,039.29/x
  3. Step 3: Cross multiply
    253,753.21x = 350,179.25 × 139,039.29
  4. Step 4: Simplify right side
    253,753.21x = 48,688,674,640.33
  5. Step 5: Solve for x
    x = 48,688,674,640.33/253,753.21
  6. Step 6: Final answer
    x = 191,874.12

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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.