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Finding the Fourth Proportional to 300,943.80, 451,415.70 and 123,578.10

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Solution

The fourth proportional to 300,943.80, 451,415.70 and 123,578.10 is: 185,367.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,943.80 : 451,415.70 = 123,578.10 : x
  2. Step 2: Convert to fraction form
    300,943.80/451,415.70 = 123,578.10/x
  3. Step 3: Cross multiply
    300,943.80x = 451,415.70 × 123,578.10
  4. Step 4: Simplify right side
    300,943.80x = 55,785,094,516.17
  5. Step 5: Solve for x
    x = 55,785,094,516.17/300,943.80
  6. Step 6: Final answer
    x = 185,367.15

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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.