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Finding the Fourth Proportional to 300,544,078.80, 450,984,079.80 and 127,991,528.40

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Solution

The fourth proportional to 300,544,078.80, 450,984,079.80 and 127,991,528.40 is: 192,058,821.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,544,078.80 : 450,984,079.80 = 127,991,528.40 : x
  2. Step 2: Convert to fraction form
    300,544,078.80/450,984,079.80 = 127,991,528.40/x
  3. Step 3: Cross multiply
    300,544,078.80x = 450,984,079.80 × 127,991,528.40
  4. Step 4: Simplify right side
    300,544,078.80x = 57,722,141,657,669,568
  5. Step 5: Solve for x
    x = 57,722,141,657,669,568/300,544,078.80
  6. Step 6: Final answer
    x = 192,058,821.75

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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.