Home / 398,512,913.51-597,942,014.78-214,065,188.10

Finding the Fourth Proportional to 398,512,913.51, 597,942,014.78 and 214,065,188.10

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Solution

The fourth proportional to 398,512,913.51, 597,942,014.78 and 214,065,188.10 is: 321,190,519.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,512,913.51 : 597,942,014.78 = 214,065,188.10 : x
  2. Step 2: Convert to fraction form
    398,512,913.51/597,942,014.78 = 214,065,188.10/x
  3. Step 3: Cross multiply
    398,512,913.51x = 597,942,014.78 × 214,065,188.10
  4. Step 4: Simplify right side
    398,512,913.51x = 127,998,569,867,308,848
  5. Step 5: Solve for x
    x = 127,998,569,867,308,848/398,512,913.51
  6. Step 6: Final answer
    x = 321,190,519.87

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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.