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Finding the Fourth Proportional to 660,372.60, 990,558.90 and 161,736.60

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Solution

The fourth proportional to 660,372.60, 990,558.90 and 161,736.60 is: 242,604.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,372.60 : 990,558.90 = 161,736.60 : x
  2. Step 2: Convert to fraction form
    660,372.60/990,558.90 = 161,736.60/x
  3. Step 3: Cross multiply
    660,372.60x = 990,558.90 × 161,736.60
  4. Step 4: Simplify right side
    660,372.60x = 160,209,628,585.74
  5. Step 5: Solve for x
    x = 160,209,628,585.74/660,372.60
  6. Step 6: Final answer
    x = 242,604.90

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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.