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Finding the Fourth Proportional to 300,003.80, 450,005.70 and 159,690.20

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Solution

The fourth proportional to 300,003.80, 450,005.70 and 159,690.20 is: 239,535.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,003.80 : 450,005.70 = 159,690.20 : x
  2. Step 2: Convert to fraction form
    300,003.80/450,005.70 = 159,690.20/x
  3. Step 3: Cross multiply
    300,003.80x = 450,005.70 × 159,690.20
  4. Step 4: Simplify right side
    300,003.80x = 71,861,500,234.14
  5. Step 5: Solve for x
    x = 71,861,500,234.14/300,003.80
  6. Step 6: Final answer
    x = 239,535.30

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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.