Home / 319,538,638.12-440,959,009.12-178,412,032.32

Finding the Fourth Proportional to 319,538,638.12, 440,959,009.12 and 178,412,032.32

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Solution

The fourth proportional to 319,538,638.12, 440,959,009.12 and 178,412,032.32 is: 246,206,197.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,538,638.12 : 440,959,009.12 = 178,412,032.32 : x
  2. Step 2: Convert to fraction form
    319,538,638.12/440,959,009.12 = 178,412,032.32/x
  3. Step 3: Cross multiply
    319,538,638.12x = 440,959,009.12 × 178,412,032.32
  4. Step 4: Simplify right side
    319,538,638.12x = 78,672,392,986,912,608
  5. Step 5: Solve for x
    x = 78,672,392,986,912,608/319,538,638.12
  6. Step 6: Final answer
    x = 246,206,197.32

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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.