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Finding the Fourth Proportional to 312,170.60, 467,219.10 and 218,858.60

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Solution

The fourth proportional to 312,170.60, 467,219.10 and 218,858.60 is: 327,561.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,170.60 : 467,219.10 = 218,858.60 : x
  2. Step 2: Convert to fraction form
    312,170.60/467,219.10 = 218,858.60/x
  3. Step 3: Cross multiply
    312,170.60x = 467,219.10 × 218,858.60
  4. Step 4: Simplify right side
    312,170.60x = 102,254,918,119.26
  5. Step 5: Solve for x
    x = 102,254,918,119.26/312,170.60
  6. Step 6: Final answer
    x = 327,561.01

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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.