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Finding the Fourth Proportional to 386,908.86, 579,222.81 and 377,370.30

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Solution

The fourth proportional to 386,908.86, 579,222.81 and 377,370.30 is: 564,943.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,908.86 : 579,222.81 = 377,370.30 : x
  2. Step 2: Convert to fraction form
    386,908.86/579,222.81 = 377,370.30/x
  3. Step 3: Cross multiply
    386,908.86x = 579,222.81 × 377,370.30
  4. Step 4: Simplify right side
    386,908.86x = 218,581,485,576.54
  5. Step 5: Solve for x
    x = 218,581,485,576.54/386,908.86
  6. Step 6: Final answer
    x = 564,943.09

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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.