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Finding the Fourth Proportional to 253,381.92, 349,954.03 and 172,669.31

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Solution

The fourth proportional to 253,381.92, 349,954.03 and 172,669.31 is: 238,479.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,381.92 : 349,954.03 = 172,669.31 : x
  2. Step 2: Convert to fraction form
    253,381.92/349,954.03 = 172,669.31/x
  3. Step 3: Cross multiply
    253,381.92x = 349,954.03 × 172,669.31
  4. Step 4: Simplify right side
    253,381.92x = 60,426,320,891.82
  5. Step 5: Solve for x
    x = 60,426,320,891.82/253,381.92
  6. Step 6: Final answer
    x = 238,479.21

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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.