Home / 279,847,768.72-386,191,262.30-154,399,958.32

Finding the Fourth Proportional to 279,847,768.72, 386,191,262.30 and 154,399,958.32

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Solution

The fourth proportional to 279,847,768.72, 386,191,262.30 and 154,399,958.32 is: 213,072,682.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,847,768.72 : 386,191,262.30 = 154,399,958.32 : x
  2. Step 2: Convert to fraction form
    279,847,768.72/386,191,262.30 = 154,399,958.32/x
  3. Step 3: Cross multiply
    279,847,768.72x = 386,191,262.30 × 154,399,958.32
  4. Step 4: Simplify right side
    279,847,768.72x = 59,627,914,802,668,184
  5. Step 5: Solve for x
    x = 59,627,914,802,668,184/279,847,768.72
  6. Step 6: Final answer
    x = 213,072,682.61

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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.