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Finding the Fourth Proportional to 202,317.21, 303,611.22 and 83,988.63

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Solution

The fourth proportional to 202,317.21, 303,611.22 and 83,988.63 is: 126,039.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,317.21 : 303,611.22 = 83,988.63 : x
  2. Step 2: Convert to fraction form
    202,317.21/303,611.22 = 83,988.63/x
  3. Step 3: Cross multiply
    202,317.21x = 303,611.22 × 83,988.63
  4. Step 4: Simplify right side
    202,317.21x = 25,499,890,420.43
  5. Step 5: Solve for x
    x = 25,499,890,420.43/202,317.21
  6. Step 6: Final answer
    x = 126,039.16

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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.