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Finding the Fourth Proportional to 300,344.30, 450,269.49 and 140,341.09

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Solution

The fourth proportional to 300,344.30, 450,269.49 and 140,341.09 is: 210,396.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,344.30 : 450,269.49 = 140,341.09 : x
  2. Step 2: Convert to fraction form
    300,344.30/450,269.49 = 140,341.09/x
  3. Step 3: Cross multiply
    300,344.30x = 450,269.49 × 140,341.09
  4. Step 4: Simplify right side
    300,344.30x = 63,191,311,020.34
  5. Step 5: Solve for x
    x = 63,191,311,020.34/300,344.30
  6. Step 6: Final answer
    x = 210,396.24

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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.