Home / 315,039,324.20-472,558,986.30-85,008,039.80

Finding the Fourth Proportional to 315,039,324.20, 472,558,986.30 and 85,008,039.80

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Solution

The fourth proportional to 315,039,324.20, 472,558,986.30 and 85,008,039.80 is: 127,512,059.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,039,324.20 : 472,558,986.30 = 85,008,039.80 : x
  2. Step 2: Convert to fraction form
    315,039,324.20/472,558,986.30 = 85,008,039.80/x
  3. Step 3: Cross multiply
    315,039,324.20x = 472,558,986.30 × 85,008,039.80
  4. Step 4: Simplify right side
    315,039,324.20x = 40,171,313,115,238,056
  5. Step 5: Solve for x
    x = 40,171,313,115,238,056/315,039,324.20
  6. Step 6: Final answer
    x = 127,512,059.70

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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.