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Finding the Fourth Proportional to 300,638.53, 450,999.21 and 101,015.95

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Solution

The fourth proportional to 300,638.53, 450,999.21 and 101,015.95 is: 151,537.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,638.53 : 450,999.21 = 101,015.95 : x
  2. Step 2: Convert to fraction form
    300,638.53/450,999.21 = 101,015.95/x
  3. Step 3: Cross multiply
    300,638.53x = 450,999.21 × 101,015.95
  4. Step 4: Simplify right side
    300,638.53x = 45,558,113,647.40
  5. Step 5: Solve for x
    x = 45,558,113,647.40/300,638.53
  6. Step 6: Final answer
    x = 151,537.84

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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.