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Finding the Fourth Proportional to 300,638.30, 450,998.85 and 101,015.72

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Solution

The fourth proportional to 300,638.30, 450,998.85 and 101,015.72 is: 151,537.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,638.30 : 450,998.85 = 101,015.72 : x
  2. Step 2: Convert to fraction form
    300,638.30/450,998.85 = 101,015.72/x
  3. Step 3: Cross multiply
    300,638.30x = 450,998.85 × 101,015.72
  4. Step 4: Simplify right side
    300,638.30x = 45,557,971,296.93
  5. Step 5: Solve for x
    x = 45,557,971,296.93/300,638.30
  6. Step 6: Final answer
    x = 151,537.49

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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.