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Finding the Fourth Proportional to 198,994.70, 274,617.60 and 108,355.63

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Solution

The fourth proportional to 198,994.70, 274,617.60 and 108,355.63 is: 149,533.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,994.70 : 274,617.60 = 108,355.63 : x
  2. Step 2: Convert to fraction form
    198,994.70/274,617.60 = 108,355.63/x
  3. Step 3: Cross multiply
    198,994.70x = 274,617.60 × 108,355.63
  4. Step 4: Simplify right side
    198,994.70x = 29,756,363,057.09
  5. Step 5: Solve for x
    x = 29,756,363,057.09/198,994.70
  6. Step 6: Final answer
    x = 149,533.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.