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Finding the Fourth Proportional to 505,835.70, 758,644.20 and 221,525.70

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Solution

The fourth proportional to 505,835.70, 758,644.20 and 221,525.70 is: 332,240.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,835.70 : 758,644.20 = 221,525.70 : x
  2. Step 2: Convert to fraction form
    505,835.70/758,644.20 = 221,525.70/x
  3. Step 3: Cross multiply
    505,835.70x = 758,644.20 × 221,525.70
  4. Step 4: Simplify right side
    505,835.70x = 168,059,187,455.94
  5. Step 5: Solve for x
    x = 168,059,187,455.94/505,835.70
  6. Step 6: Final answer
    x = 332,240.66

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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.