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Finding the Fourth Proportional to 300,907.80, 451,361.70 and 123,542.10

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Solution

The fourth proportional to 300,907.80, 451,361.70 and 123,542.10 is: 185,313.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,907.80 : 451,361.70 = 123,542.10 : x
  2. Step 2: Convert to fraction form
    300,907.80/451,361.70 = 123,542.10/x
  3. Step 3: Cross multiply
    300,907.80x = 451,361.70 × 123,542.10
  4. Step 4: Simplify right side
    300,907.80x = 55,762,172,277.57
  5. Step 5: Solve for x
    x = 55,762,172,277.57/300,907.80
  6. Step 6: Final answer
    x = 185,313.15

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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.