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Finding the Fourth Proportional to 397,879.81, 596,826.06 and 221,507.89

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Solution

The fourth proportional to 397,879.81, 596,826.06 and 221,507.89 is: 332,265.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,879.81 : 596,826.06 = 221,507.89 : x
  2. Step 2: Convert to fraction form
    397,879.81/596,826.06 = 221,507.89/x
  3. Step 3: Cross multiply
    397,879.81x = 596,826.06 × 221,507.89
  4. Step 4: Simplify right side
    397,879.81x = 132,201,681,247.61
  5. Step 5: Solve for x
    x = 132,201,681,247.61/397,879.81
  6. Step 6: Final answer
    x = 332,265.37

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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.