Home / 280,629,747.80-387,271,557.76-155,190,431.66

Finding the Fourth Proportional to 280,629,747.80, 387,271,557.76 and 155,190,431.66

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Solution

The fourth proportional to 280,629,747.80, 387,271,557.76 and 155,190,431.66 is: 214,164,181.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,629,747.80 : 387,271,557.76 = 155,190,431.66 : x
  2. Step 2: Convert to fraction form
    280,629,747.80/387,271,557.76 = 155,190,431.66/x
  3. Step 3: Cross multiply
    280,629,747.80x = 387,271,557.76 × 155,190,431.66
  4. Step 4: Simplify right side
    280,629,747.80x = 60,100,840,218,415,016
  5. Step 5: Solve for x
    x = 60,100,840,218,415,016/280,629,747.80
  6. Step 6: Final answer
    x = 214,164,181.42

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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.