Home / 280,420,142.24-386,980,997.07-153,263,389.03

Finding the Fourth Proportional to 280,420,142.24, 386,980,997.07 and 153,263,389.03

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Solution

The fourth proportional to 280,420,142.24, 386,980,997.07 and 153,263,389.03 is: 211,504,133.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,420,142.24 : 386,980,997.07 = 153,263,389.03 : x
  2. Step 2: Convert to fraction form
    280,420,142.24/386,980,997.07 = 153,263,389.03/x
  3. Step 3: Cross multiply
    280,420,142.24x = 386,980,997.07 × 153,263,389.03
  4. Step 4: Simplify right side
    280,420,142.24x = 59,310,019,100,763,992
  5. Step 5: Solve for x
    x = 59,310,019,100,763,992/280,420,142.24
  6. Step 6: Final answer
    x = 211,504,133.14

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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.