Home / 420,060,142.82-579,667,801.44-231,884,395.01

Finding the Fourth Proportional to 420,060,142.82, 579,667,801.44 and 231,884,395.01

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Solution

The fourth proportional to 420,060,142.82, 579,667,801.44 and 231,884,395.01 is: 319,992,076.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,060,142.82 : 579,667,801.44 = 231,884,395.01 : x
  2. Step 2: Convert to fraction form
    420,060,142.82/579,667,801.44 = 231,884,395.01/x
  3. Step 3: Cross multiply
    420,060,142.82x = 579,667,801.44 × 231,884,395.01
  4. Step 4: Simplify right side
    420,060,142.82x = 134,415,917,443,836,192
  5. Step 5: Solve for x
    x = 134,415,917,443,836,192/420,060,142.82
  6. Step 6: Final answer
    x = 319,992,076.71

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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.