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Finding the Fourth Proportional to 519,757.20, 779,686.83 and 216,088.61

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Solution

The fourth proportional to 519,757.20, 779,686.83 and 216,088.61 is: 324,154.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,757.20 : 779,686.83 = 216,088.61 : x
  2. Step 2: Convert to fraction form
    519,757.20/779,686.83 = 216,088.61/x
  3. Step 3: Cross multiply
    519,757.20x = 779,686.83 × 216,088.61
  4. Step 4: Simplify right side
    519,757.20x = 168,481,439,431.57
  5. Step 5: Solve for x
    x = 168,481,439,431.57/519,757.20
  6. Step 6: Final answer
    x = 324,154.12

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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.