Home / 398,584,285.74-550,046,656.77-222,372,308.43

Finding the Fourth Proportional to 398,584,285.74, 550,046,656.77 and 222,372,308.43

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Solution

The fourth proportional to 398,584,285.74, 550,046,656.77 and 222,372,308.43 is: 306,873,976.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,584,285.74 : 550,046,656.77 = 222,372,308.43 : x
  2. Step 2: Convert to fraction form
    398,584,285.74/550,046,656.77 = 222,372,308.43/x
  3. Step 3: Cross multiply
    398,584,285.74x = 550,046,656.77 × 222,372,308.43
  4. Step 4: Simplify right side
    398,584,285.74x = 122,315,144,810,148,784
  5. Step 5: Solve for x
    x = 122,315,144,810,148,784/398,584,285.74
  6. Step 6: Final answer
    x = 306,873,976.69

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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.