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Finding the Fourth Proportional to 550,228.37, 759,359.19 and 305,237.31

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Solution

The fourth proportional to 550,228.37, 759,359.19 and 305,237.31 is: 421,251.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,228.37 : 759,359.19 = 305,237.31 : x
  2. Step 2: Convert to fraction form
    550,228.37/759,359.19 = 305,237.31/x
  3. Step 3: Cross multiply
    550,228.37x = 759,359.19 × 305,237.31
  4. Step 4: Simplify right side
    550,228.37x = 231,784,756,687.01
  5. Step 5: Solve for x
    x = 231,784,756,687.01/550,228.37
  6. Step 6: Final answer
    x = 421,251.92

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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.