Home / 280,293,078.85-386,815,512.49-161,215,480.58

Finding the Fourth Proportional to 280,293,078.85, 386,815,512.49 and 161,215,480.58

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Solution

The fourth proportional to 280,293,078.85, 386,815,512.49 and 161,215,480.58 is: 222,483,726.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,293,078.85 : 386,815,512.49 = 161,215,480.58 : x
  2. Step 2: Convert to fraction form
    280,293,078.85/386,815,512.49 = 161,215,480.58/x
  3. Step 3: Cross multiply
    280,293,078.85x = 386,815,512.49 × 161,215,480.58
  4. Step 4: Simplify right side
    280,293,078.85x = 62,360,648,739,537,224
  5. Step 5: Solve for x
    x = 62,360,648,739,537,224/280,293,078.85
  6. Step 6: Final answer
    x = 222,483,726.66

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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.