Home / 312,265,656.51-431,122,480.47-200,949,900.18

Finding the Fourth Proportional to 312,265,656.51, 431,122,480.47 and 200,949,900.18

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Solution

The fourth proportional to 312,265,656.51, 431,122,480.47 and 200,949,900.18 is: 277,436,911.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,265,656.51 : 431,122,480.47 = 200,949,900.18 : x
  2. Step 2: Convert to fraction form
    312,265,656.51/431,122,480.47 = 200,949,900.18/x
  3. Step 3: Cross multiply
    312,265,656.51x = 431,122,480.47 × 200,949,900.18
  4. Step 4: Simplify right side
    312,265,656.51x = 86,634,019,415,800,512
  5. Step 5: Solve for x
    x = 86,634,019,415,800,512/312,265,656.51
  6. Step 6: Final answer
    x = 277,436,911.84

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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.