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Finding the Fourth Proportional to 300,342.30, 450,266.49 and 140,339.09

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Solution

The fourth proportional to 300,342.30, 450,266.49 and 140,339.09 is: 210,393.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,342.30 : 450,266.49 = 140,339.09 : x
  2. Step 2: Convert to fraction form
    300,342.30/450,266.49 = 140,339.09/x
  3. Step 3: Cross multiply
    300,342.30x = 450,266.49 × 140,339.09
  4. Step 4: Simplify right side
    300,342.30x = 63,189,990,589.76
  5. Step 5: Solve for x
    x = 63,189,990,589.76/300,342.30
  6. Step 6: Final answer
    x = 210,393.25

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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.