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Finding the Fourth Proportional to 377,060.25, 520,289.01 and 221,919.30

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Solution

The fourth proportional to 377,060.25, 520,289.01 and 221,919.30 is: 306,216.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,060.25 : 520,289.01 = 221,919.30 : x
  2. Step 2: Convert to fraction form
    377,060.25/520,289.01 = 221,919.30/x
  3. Step 3: Cross multiply
    377,060.25x = 520,289.01 × 221,919.30
  4. Step 4: Simplify right side
    377,060.25x = 115,462,172,896.89
  5. Step 5: Solve for x
    x = 115,462,172,896.89/377,060.25
  6. Step 6: Final answer
    x = 306,216.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.