Home / 389,747,388.78-537,783,029.73-222,407,246.70

Finding the Fourth Proportional to 389,747,388.78, 537,783,029.73 and 222,407,246.70

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Solution

The fourth proportional to 389,747,388.78, 537,783,029.73 and 222,407,246.70 is: 306,882,987.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,747,388.78 : 537,783,029.73 = 222,407,246.70 : x
  2. Step 2: Convert to fraction form
    389,747,388.78/537,783,029.73 = 222,407,246.70/x
  3. Step 3: Cross multiply
    389,747,388.78x = 537,783,029.73 × 222,407,246.70
  4. Step 4: Simplify right side
    389,747,388.78x = 119,606,842,964,233,536
  5. Step 5: Solve for x
    x = 119,606,842,964,233,536/389,747,388.78
  6. Step 6: Final answer
    x = 306,882,987.31

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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.