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Finding the Fourth Proportional to 520,121.92, 779,871.52 and 216,149.52

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Solution

The fourth proportional to 520,121.92, 779,871.52 and 216,149.52 is: 324,094.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,121.92 : 779,871.52 = 216,149.52 : x
  2. Step 2: Convert to fraction form
    520,121.92/779,871.52 = 216,149.52/x
  3. Step 3: Cross multiply
    520,121.92x = 779,871.52 × 216,149.52
  4. Step 4: Simplify right side
    520,121.92x = 168,568,854,709.67
  5. Step 5: Solve for x
    x = 168,568,854,709.67/520,121.92
  6. Step 6: Final answer
    x = 324,094.89

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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.