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Finding the Fourth Proportional to 520,723.77, 781,102.89 and 179,163.89

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Solution

The fourth proportional to 520,723.77, 781,102.89 and 179,163.89 is: 268,751.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,723.77 : 781,102.89 = 179,163.89 : x
  2. Step 2: Convert to fraction form
    520,723.77/781,102.89 = 179,163.89/x
  3. Step 3: Cross multiply
    520,723.77x = 781,102.89 × 179,163.89
  4. Step 4: Simplify right side
    520,723.77x = 139,945,432,262.64
  5. Step 5: Solve for x
    x = 139,945,432,262.64/520,723.77
  6. Step 6: Final answer
    x = 268,751.76

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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.