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Finding the Fourth Proportional to 202,385.80, 303,578.70 and 69,254.20

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Solution

The fourth proportional to 202,385.80, 303,578.70 and 69,254.20 is: 103,881.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,385.80 : 303,578.70 = 69,254.20 : x
  2. Step 2: Convert to fraction form
    202,385.80/303,578.70 = 69,254.20/x
  3. Step 3: Cross multiply
    202,385.80x = 303,578.70 × 69,254.20
  4. Step 4: Simplify right side
    202,385.80x = 21,024,100,005.54
  5. Step 5: Solve for x
    x = 21,024,100,005.54/202,385.80
  6. Step 6: Final answer
    x = 103,881.30

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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.