Home / 280,221,171.57-386,729,119.94-156,485,753.01

Finding the Fourth Proportional to 280,221,171.57, 386,729,119.94 and 156,485,753.01

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Solution

The fourth proportional to 280,221,171.57, 386,729,119.94 and 156,485,753.01 is: 215,963,687.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,221,171.57 : 386,729,119.94 = 156,485,753.01 : x
  2. Step 2: Convert to fraction form
    280,221,171.57/386,729,119.94 = 156,485,753.01/x
  3. Step 3: Cross multiply
    280,221,171.57x = 386,729,119.94 × 156,485,753.01
  4. Step 4: Simplify right side
    280,221,171.57x = 60,517,597,543,923,072
  5. Step 5: Solve for x
    x = 60,517,597,543,923,072/280,221,171.57
  6. Step 6: Final answer
    x = 215,963,687.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.