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Finding the Fourth Proportional to 300,381.71, 450,616.30 and 90,036.05

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Solution

The fourth proportional to 300,381.71, 450,616.30 and 90,036.05 is: 135,067.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,381.71 : 450,616.30 = 90,036.05 : x
  2. Step 2: Convert to fraction form
    300,381.71/450,616.30 = 90,036.05/x
  3. Step 3: Cross multiply
    300,381.71x = 450,616.30 × 90,036.05
  4. Step 4: Simplify right side
    300,381.71x = 40,571,709,239.44
  5. Step 5: Solve for x
    x = 40,571,709,239.44/300,381.71
  6. Step 6: Final answer
    x = 135,067.18

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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.