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Finding the Fourth Proportional to 555,367.51, 832,490.43 and 218,644.51

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Solution

The fourth proportional to 555,367.51, 832,490.43 and 218,644.51 is: 327,745.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,367.51 : 832,490.43 = 218,644.51 : x
  2. Step 2: Convert to fraction form
    555,367.51/832,490.43 = 218,644.51/x
  3. Step 3: Cross multiply
    555,367.51x = 832,490.43 × 218,644.51
  4. Step 4: Simplify right side
    555,367.51x = 182,019,462,147.04
  5. Step 5: Solve for x
    x = 182,019,462,147.04/555,367.51
  6. Step 6: Final answer
    x = 327,745.97

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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.