Home / 285,137,554.42-393,422,383.47-161,378,231.50

Finding the Fourth Proportional to 285,137,554.42, 393,422,383.47 and 161,378,231.50

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Solution

The fourth proportional to 285,137,554.42, 393,422,383.47 and 161,378,231.50 is: 222,663,789.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,137,554.42 : 393,422,383.47 = 161,378,231.50 : x
  2. Step 2: Convert to fraction form
    285,137,554.42/393,422,383.47 = 161,378,231.50/x
  3. Step 3: Cross multiply
    285,137,554.42x = 393,422,383.47 × 161,378,231.50
  4. Step 4: Simplify right side
    285,137,554.42x = 63,489,808,476,903,440
  5. Step 5: Solve for x
    x = 63,489,808,476,903,440/285,137,554.42
  6. Step 6: Final answer
    x = 222,663,789.78

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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.