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Finding the Fourth Proportional to 300,620.72, 450,972.60 and 100,998.20

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Solution

The fourth proportional to 300,620.72, 450,972.60 and 100,998.20 is: 151,511.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,620.72 : 450,972.60 = 100,998.20 : x
  2. Step 2: Convert to fraction form
    300,620.72/450,972.60 = 100,998.20/x
  3. Step 3: Cross multiply
    300,620.72x = 450,972.60 × 100,998.20
  4. Step 4: Simplify right side
    300,620.72x = 45,547,418,594.46
  5. Step 5: Solve for x
    x = 45,547,418,594.46/300,620.72
  6. Step 6: Final answer
    x = 151,511.24

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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.