Home / 280,315,604.96-386,823,827.28-161,229,142.92

Finding the Fourth Proportional to 280,315,604.96, 386,823,827.28 and 161,229,142.92

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Solution

The fourth proportional to 280,315,604.96, 386,823,827.28 and 161,229,142.92 is: 222,489,483.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,315,604.96 : 386,823,827.28 = 161,229,142.92 : x
  2. Step 2: Convert to fraction form
    280,315,604.96/386,823,827.28 = 161,229,142.92/x
  3. Step 3: Cross multiply
    280,315,604.96x = 386,823,827.28 × 161,229,142.92
  4. Step 4: Simplify right side
    280,315,604.96x = 62,367,274,133,388,504
  5. Step 5: Solve for x
    x = 62,367,274,133,388,504/280,315,604.96
  6. Step 6: Final answer
    x = 222,489,483.39

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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.