Home / 398,512,914.51-597,942,016.28-214,065,189.10

Finding the Fourth Proportional to 398,512,914.51, 597,942,016.28 and 214,065,189.10

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Solution

The fourth proportional to 398,512,914.51, 597,942,016.28 and 214,065,189.10 is: 321,190,521.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,512,914.51 : 597,942,016.28 = 214,065,189.10 : x
  2. Step 2: Convert to fraction form
    398,512,914.51/597,942,016.28 = 214,065,189.10/x
  3. Step 3: Cross multiply
    398,512,914.51x = 597,942,016.28 × 214,065,189.10
  4. Step 4: Simplify right side
    398,512,914.51x = 127,998,570,785,813,472
  5. Step 5: Solve for x
    x = 127,998,570,785,813,472/398,512,914.51
  6. Step 6: Final answer
    x = 321,190,521.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.