Home / 279,372,836.81-385,546,408.58-155,613,568.61

Finding the Fourth Proportional to 279,372,836.81, 385,546,408.58 and 155,613,568.61

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Solution

The fourth proportional to 279,372,836.81, 385,546,408.58 and 155,613,568.61 is: 214,753,349.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,372,836.81 : 385,546,408.58 = 155,613,568.61 : x
  2. Step 2: Convert to fraction form
    279,372,836.81/385,546,408.58 = 155,613,568.61/x
  3. Step 3: Cross multiply
    279,372,836.81x = 385,546,408.58 × 155,613,568.61
  4. Step 4: Simplify right side
    279,372,836.81x = 59,996,252,504,088,720
  5. Step 5: Solve for x
    x = 59,996,252,504,088,720/279,372,836.81
  6. Step 6: Final answer
    x = 214,753,349.64

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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.