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Finding the Fourth Proportional to 253,717.92, 350,131.16 and 138,994.08

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Solution

The fourth proportional to 253,717.92, 350,131.16 and 138,994.08 is: 191,812.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,717.92 : 350,131.16 = 138,994.08 : x
  2. Step 2: Convert to fraction form
    253,717.92/350,131.16 = 138,994.08/x
  3. Step 3: Cross multiply
    253,717.92x = 350,131.16 × 138,994.08
  4. Step 4: Simplify right side
    253,717.92x = 48,666,156,716.18
  5. Step 5: Solve for x
    x = 48,666,156,716.18/253,717.92
  6. Step 6: Final answer
    x = 191,812.06

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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.