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Finding the Fourth Proportional to 269,015.20, 403,177.20 and 128,471.20

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Solution

The fourth proportional to 269,015.20, 403,177.20 and 128,471.20 is: 192,541.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,015.20 : 403,177.20 = 128,471.20 : x
  2. Step 2: Convert to fraction form
    269,015.20/403,177.20 = 128,471.20/x
  3. Step 3: Cross multiply
    269,015.20x = 403,177.20 × 128,471.20
  4. Step 4: Simplify right side
    269,015.20x = 51,796,658,696.64
  5. Step 5: Solve for x
    x = 51,796,658,696.64/269,015.20
  6. Step 6: Final answer
    x = 192,541.75

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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.