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Finding the Fourth Proportional to 351,990.98, 527,111.66 and 322,127.48

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Solution

The fourth proportional to 351,990.98, 527,111.66 and 322,127.48 is: 482,390.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,990.98 : 527,111.66 = 322,127.48 : x
  2. Step 2: Convert to fraction form
    351,990.98/527,111.66 = 322,127.48/x
  3. Step 3: Cross multiply
    351,990.98x = 527,111.66 × 322,127.48
  4. Step 4: Simplify right side
    351,990.98x = 169,797,149,103.78
  5. Step 5: Solve for x
    x = 169,797,149,103.78/351,990.98
  6. Step 6: Final answer
    x = 482,390.63

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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.