Home / 218,903,172.80-328,138,183.20-103,685,201.60

Finding the Fourth Proportional to 218,903,172.80, 328,138,183.20 and 103,685,201.60

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Solution

The fourth proportional to 218,903,172.80, 328,138,183.20 and 103,685,201.60 is: 155,425,219.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,903,172.80 : 328,138,183.20 = 103,685,201.60 : x
  2. Step 2: Convert to fraction form
    218,903,172.80/328,138,183.20 = 103,685,201.60/x
  3. Step 3: Cross multiply
    218,903,172.80x = 328,138,183.20 × 103,685,201.60
  4. Step 4: Simplify right side
    218,903,172.80x = 34,023,073,677,749,728
  5. Step 5: Solve for x
    x = 34,023,073,677,749,728/218,903,172.80
  6. Step 6: Final answer
    x = 155,425,219.48

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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.