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Finding the Fourth Proportional to 300,147.30, 450,111.60 and 100,474.20

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Solution

The fourth proportional to 300,147.30, 450,111.60 and 100,474.20 is: 150,674.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,147.30 : 450,111.60 = 100,474.20 : x
  2. Step 2: Convert to fraction form
    300,147.30/450,111.60 = 100,474.20/x
  3. Step 3: Cross multiply
    300,147.30x = 450,111.60 × 100,474.20
  4. Step 4: Simplify right side
    300,147.30x = 45,224,602,920.72
  5. Step 5: Solve for x
    x = 45,224,602,920.72/300,147.30
  6. Step 6: Final answer
    x = 150,674.70

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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.