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Finding the Fourth Proportional to 519,620.76, 779,343.30 and 145,557.72

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Solution

The fourth proportional to 519,620.76, 779,343.30 and 145,557.72 is: 218,311.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,620.76 : 779,343.30 = 145,557.72 : x
  2. Step 2: Convert to fraction form
    519,620.76/779,343.30 = 145,557.72/x
  3. Step 3: Cross multiply
    519,620.76x = 779,343.30 × 145,557.72
  4. Step 4: Simplify right side
    519,620.76x = 113,439,433,845.28
  5. Step 5: Solve for x
    x = 113,439,433,845.28/519,620.76
  6. Step 6: Final answer
    x = 218,311.97

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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.