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Finding the Fourth Proportional to 621,224.96, 931,882 and 165,813.80

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Solution

The fourth proportional to 621,224.96, 931,882 and 165,813.80 is: 248,732.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,224.96 : 931,882 = 165,813.80 : x
  2. Step 2: Convert to fraction form
    621,224.96/931,882 = 165,813.80/x
  3. Step 3: Cross multiply
    621,224.96x = 931,882 × 165,813.80
  4. Step 4: Simplify right side
    621,224.96x = 154,518,895,571.60
  5. Step 5: Solve for x
    x = 154,518,895,571.60/621,224.96
  6. Step 6: Final answer
    x = 248,732.59

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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.