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Finding the Fourth Proportional to 210,394,250.80, 315,367,427.40 and 80,951,844.40

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Solution

The fourth proportional to 210,394,250.80, 315,367,427.40 and 80,951,844.40 is: 121,341,599.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,394,250.80 : 315,367,427.40 = 80,951,844.40 : x
  2. Step 2: Convert to fraction form
    210,394,250.80/315,367,427.40 = 80,951,844.40/x
  3. Step 3: Cross multiply
    210,394,250.80x = 315,367,427.40 × 80,951,844.40
  4. Step 4: Simplify right side
    210,394,250.80x = 25,529,574,911,713,096
  5. Step 5: Solve for x
    x = 25,529,574,911,713,096/210,394,250.80
  6. Step 6: Final answer
    x = 121,341,599.47

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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.