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Finding the Fourth Proportional to 202,638.10, 303,629.10 and 190,828.30

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Solution

The fourth proportional to 202,638.10, 303,629.10 and 190,828.30 is: 285,933.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,638.10 : 303,629.10 = 190,828.30 : x
  2. Step 2: Convert to fraction form
    202,638.10/303,629.10 = 190,828.30/x
  3. Step 3: Cross multiply
    202,638.10x = 303,629.10 × 190,828.30
  4. Step 4: Simplify right side
    202,638.10x = 57,941,024,983.53
  5. Step 5: Solve for x
    x = 57,941,024,983.53/202,638.10
  6. Step 6: Final answer
    x = 285,933.52

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1.5x scale

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.