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Finding the Fourth Proportional to 202,340.64, 303,512.85 and 89,990.40

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Solution

The fourth proportional to 202,340.64, 303,512.85 and 89,990.40 is: 134,986.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,340.64 : 303,512.85 = 89,990.40 : x
  2. Step 2: Convert to fraction form
    202,340.64/303,512.85 = 89,990.40/x
  3. Step 3: Cross multiply
    202,340.64x = 303,512.85 × 89,990.40
  4. Step 4: Simplify right side
    202,340.64x = 27,313,242,776.64
  5. Step 5: Solve for x
    x = 27,313,242,776.64/202,340.64
  6. Step 6: Final answer
    x = 134,986.44

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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.