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Finding the Fourth Proportional to 519,694.80, 779,833.80 and 220,124.40

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Solution

The fourth proportional to 519,694.80, 779,833.80 and 220,124.40 is: 330,310.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,694.80 : 779,833.80 = 220,124.40 : x
  2. Step 2: Convert to fraction form
    519,694.80/779,833.80 = 220,124.40/x
  3. Step 3: Cross multiply
    519,694.80x = 779,833.80 × 220,124.40
  4. Step 4: Simplify right side
    519,694.80x = 171,660,447,324.72
  5. Step 5: Solve for x
    x = 171,660,447,324.72/519,694.80
  6. Step 6: Final answer
    x = 330,310.11

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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.