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Finding the Fourth Proportional to 579,737.80, 869,760.30 and 205,721.80

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Solution

The fourth proportional to 579,737.80, 869,760.30 and 205,721.80 is: 308,637.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,737.80 : 869,760.30 = 205,721.80 : x
  2. Step 2: Convert to fraction form
    579,737.80/869,760.30 = 205,721.80/x
  3. Step 3: Cross multiply
    579,737.80x = 869,760.30 × 205,721.80
  4. Step 4: Simplify right side
    579,737.80x = 178,928,654,484.54
  5. Step 5: Solve for x
    x = 178,928,654,484.54/579,737.80
  6. Step 6: Final answer
    x = 308,637.21

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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.