Home / 319,400.32-440,731.84-198,561.28

Finding the Fourth Proportional to 319,400.32, 440,731.84 and 198,561.28

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Solution

The fourth proportional to 319,400.32, 440,731.84 and 198,561.28 is: 273,989.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,400.32 : 440,731.84 = 198,561.28 : x
  2. Step 2: Convert to fraction form
    319,400.32/440,731.84 = 198,561.28/x
  3. Step 3: Cross multiply
    319,400.32x = 440,731.84 × 198,561.28
  4. Step 4: Simplify right side
    319,400.32x = 87,512,278,287.16
  5. Step 5: Solve for x
    x = 87,512,278,287.16/319,400.32
  6. Step 6: Final answer
    x = 273,989.33

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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.