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Finding the Fourth Proportional to 300,433.92, 450,639.09 and 75,791.40

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Solution

The fourth proportional to 300,433.92, 450,639.09 and 75,791.40 is: 113,684.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,433.92 : 450,639.09 = 75,791.40 : x
  2. Step 2: Convert to fraction form
    300,433.92/450,639.09 = 75,791.40/x
  3. Step 3: Cross multiply
    300,433.92x = 450,639.09 × 75,791.40
  4. Step 4: Simplify right side
    300,433.92x = 34,154,567,525.83
  5. Step 5: Solve for x
    x = 34,154,567,525.83/300,433.92
  6. Step 6: Final answer
    x = 113,684.13

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1.5x scale

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.