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Finding the Fourth Proportional to 412,066.20, 617,945.70 and 162,696.60

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Solution

The fourth proportional to 412,066.20, 617,945.70 and 162,696.60 is: 243,984.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,066.20 : 617,945.70 = 162,696.60 : x
  2. Step 2: Convert to fraction form
    412,066.20/617,945.70 = 162,696.60/x
  3. Step 3: Cross multiply
    412,066.20x = 617,945.70 × 162,696.60
  4. Step 4: Simplify right side
    412,066.20x = 100,537,664,374.62
  5. Step 5: Solve for x
    x = 100,537,664,374.62/412,066.20
  6. Step 6: Final answer
    x = 243,984.25

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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.