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Finding the Fourth Proportional to 143,380,928.20, 215,071,392.30 and 143,380,928.20

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Solution

The fourth proportional to 143,380,928.20, 215,071,392.30 and 143,380,928.20 is: 215,071,392.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,380,928.20 : 215,071,392.30 = 143,380,928.20 : x
  2. Step 2: Convert to fraction form
    143,380,928.20/215,071,392.30 = 143,380,928.20/x
  3. Step 3: Cross multiply
    143,380,928.20x = 215,071,392.30 × 143,380,928.20
  4. Step 4: Simplify right side
    143,380,928.20x = 30,837,135,857,240,332
  5. Step 5: Solve for x
    x = 30,837,135,857,240,332/143,380,928.20
  6. Step 6: Final answer
    x = 215,071,392.30

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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.