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Finding the Fourth Proportional to 621,250.73, 931,772.27 and 172,017

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Solution

The fourth proportional to 621,250.73, 931,772.27 and 172,017 is: 257,996.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,250.73 : 931,772.27 = 172,017 : x
  2. Step 2: Convert to fraction form
    621,250.73/931,772.27 = 172,017/x
  3. Step 3: Cross multiply
    621,250.73x = 931,772.27 × 172,017
  4. Step 4: Simplify right side
    621,250.73x = 160,280,670,998.63
  5. Step 5: Solve for x
    x = 160,280,670,998.63/621,250.73
  6. Step 6: Final answer
    x = 257,996.75

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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.