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Finding the Fourth Proportional to 519,773.10, 779,738.13 and 220,254.90

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Solution

The fourth proportional to 519,773.10, 779,738.13 and 220,254.90 is: 330,415.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,773.10 : 779,738.13 = 220,254.90 : x
  2. Step 2: Convert to fraction form
    519,773.10/779,738.13 = 220,254.90/x
  3. Step 3: Cross multiply
    519,773.10x = 779,738.13 × 220,254.90
  4. Step 4: Simplify right side
    519,773.10x = 171,741,143,849.34
  5. Step 5: Solve for x
    x = 171,741,143,849.34/519,773.10
  6. Step 6: Final answer
    x = 330,415.61

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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.