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Finding the Fourth Proportional to 274,683,469.20, 412,025,203.80 and 253,638,405.60

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Solution

The fourth proportional to 274,683,469.20, 412,025,203.80 and 253,638,405.60 is: 380,457,608.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,683,469.20 : 412,025,203.80 = 253,638,405.60 : x
  2. Step 2: Convert to fraction form
    274,683,469.20/412,025,203.80 = 253,638,405.60/x
  3. Step 3: Cross multiply
    274,683,469.20x = 412,025,203.80 × 253,638,405.60
  4. Step 4: Simplify right side
    274,683,469.20x = 104,505,415,758,847,056
  5. Step 5: Solve for x
    x = 104,505,415,758,847,056/274,683,469.20
  6. Step 6: Final answer
    x = 380,457,608.40

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1.5x scale

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.