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Finding the Fourth Proportional to 300,635.30, 450,952.81 and 120,720.66

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Solution

The fourth proportional to 300,635.30, 450,952.81 and 120,720.66 is: 181,080.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,635.30 : 450,952.81 = 120,720.66 : x
  2. Step 2: Convert to fraction form
    300,635.30/450,952.81 = 120,720.66/x
  3. Step 3: Cross multiply
    300,635.30x = 450,952.81 × 120,720.66
  4. Step 4: Simplify right side
    300,635.30x = 54,439,320,852.05
  5. Step 5: Solve for x
    x = 54,439,320,852.05/300,635.30
  6. Step 6: Final answer
    x = 181,080.93

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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.