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Finding the Fourth Proportional to 253,233.93, 379,710.67 and 103,579.31

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Solution

The fourth proportional to 253,233.93, 379,710.67 and 103,579.31 is: 155,311.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,233.93 : 379,710.67 = 103,579.31 : x
  2. Step 2: Convert to fraction form
    253,233.93/379,710.67 = 103,579.31/x
  3. Step 3: Cross multiply
    253,233.93x = 379,710.67 × 103,579.31
  4. Step 4: Simplify right side
    253,233.93x = 39,330,169,198.24
  5. Step 5: Solve for x
    x = 39,330,169,198.24/253,233.93
  6. Step 6: Final answer
    x = 155,311.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.