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Finding the Fourth Proportional to 300,107.60, 450,161.40 and 188,133.20

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Solution

The fourth proportional to 300,107.60, 450,161.40 and 188,133.20 is: 282,199.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,107.60 : 450,161.40 = 188,133.20 : x
  2. Step 2: Convert to fraction form
    300,107.60/450,161.40 = 188,133.20/x
  3. Step 3: Cross multiply
    300,107.60x = 450,161.40 × 188,133.20
  4. Step 4: Simplify right side
    300,107.60x = 84,690,304,698.48
  5. Step 5: Solve for x
    x = 84,690,304,698.48/300,107.60
  6. Step 6: Final answer
    x = 282,199.80

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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.