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Finding the Fourth Proportional to 253,763.43, 350,208.22 and 139,042.29

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Solution

The fourth proportional to 253,763.43, 350,208.22 and 139,042.29 is: 191,886.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,763.43 : 350,208.22 = 139,042.29 : x
  2. Step 2: Convert to fraction form
    253,763.43/350,208.22 = 139,042.29/x
  3. Step 3: Cross multiply
    253,763.43x = 350,208.22 × 139,042.29
  4. Step 4: Simplify right side
    253,763.43x = 48,693,752,885.62
  5. Step 5: Solve for x
    x = 48,693,752,885.62/253,763.43
  6. Step 6: Final answer
    x = 191,886.41

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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.