Home / 309,765,832.72-427,507,729.74-231,313,183.70

Finding the Fourth Proportional to 309,765,832.72, 427,507,729.74 and 231,313,183.70

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Solution

The fourth proportional to 309,765,832.72, 427,507,729.74 and 231,313,183.70 is: 319,235,253.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,765,832.72 : 427,507,729.74 = 231,313,183.70 : x
  2. Step 2: Convert to fraction form
    309,765,832.72/427,507,729.74 = 231,313,183.70/x
  3. Step 3: Cross multiply
    309,765,832.72x = 427,507,729.74 × 231,313,183.70
  4. Step 4: Simplify right side
    309,765,832.72x = 98,888,174,022,518,576
  5. Step 5: Solve for x
    x = 98,888,174,022,518,576/309,765,832.72
  6. Step 6: Final answer
    x = 319,235,253.14

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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.