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Finding the Fourth Proportional to 300,626.40, 450,943.38 and 90,252.12

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Solution

The fourth proportional to 300,626.40, 450,943.38 and 90,252.12 is: 135,379.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,626.40 : 450,943.38 = 90,252.12 : x
  2. Step 2: Convert to fraction form
    300,626.40/450,943.38 = 90,252.12/x
  3. Step 3: Cross multiply
    300,626.40x = 450,943.38 × 90,252.12
  4. Step 4: Simplify right side
    300,626.40x = 40,698,596,044.97
  5. Step 5: Solve for x
    x = 40,698,596,044.97/300,626.40
  6. Step 6: Final answer
    x = 135,379.31

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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.