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Finding the Fourth Proportional to 621,167.72, 931,772.30 and 171,850.97

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Solution

The fourth proportional to 621,167.72, 931,772.30 and 171,850.97 is: 257,782.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,167.72 : 931,772.30 = 171,850.97 : x
  2. Step 2: Convert to fraction form
    621,167.72/931,772.30 = 171,850.97/x
  3. Step 3: Cross multiply
    621,167.72x = 931,772.30 × 171,850.97
  4. Step 4: Simplify right side
    621,167.72x = 160,125,970,528.08
  5. Step 5: Solve for x
    x = 160,125,970,528.08/621,167.72
  6. Step 6: Final answer
    x = 257,782.18

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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.