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Finding the Fourth Proportional to 300,327.88, 450,491.82 and 138,205.57

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Solution

The fourth proportional to 300,327.88, 450,491.82 and 138,205.57 is: 207,308.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,327.88 : 450,491.82 = 138,205.57 : x
  2. Step 2: Convert to fraction form
    300,327.88/450,491.82 = 138,205.57/x
  3. Step 3: Cross multiply
    300,327.88x = 450,491.82 × 138,205.57
  4. Step 4: Simplify right side
    300,327.88x = 62,260,478,763.44
  5. Step 5: Solve for x
    x = 62,260,478,763.44/300,327.88
  6. Step 6: Final answer
    x = 207,308.36

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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.