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Finding the Fourth Proportional to 300,612.82, 450,870.63 and 90,213.70

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Solution

The fourth proportional to 300,612.82, 450,870.63 and 90,213.70 is: 135,305.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,612.82 : 450,870.63 = 90,213.70 : x
  2. Step 2: Convert to fraction form
    300,612.82/450,870.63 = 90,213.70/x
  3. Step 3: Cross multiply
    300,612.82x = 450,870.63 × 90,213.70
  4. Step 4: Simplify right side
    300,612.82x = 40,674,707,753.63
  5. Step 5: Solve for x
    x = 40,674,707,753.63/300,612.82
  6. Step 6: Final answer
    x = 135,305.97

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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.