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Finding the Fourth Proportional to 371,563.80, 512,759.02 and 218,607.75

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Solution

The fourth proportional to 371,563.80, 512,759.02 and 218,607.75 is: 301,679.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,563.80 : 512,759.02 = 218,607.75 : x
  2. Step 2: Convert to fraction form
    371,563.80/512,759.02 = 218,607.75/x
  3. Step 3: Cross multiply
    371,563.80x = 512,759.02 × 218,607.75
  4. Step 4: Simplify right side
    371,563.80x = 112,093,095,654.41
  5. Step 5: Solve for x
    x = 112,093,095,654.41/371,563.80
  6. Step 6: Final answer
    x = 301,679.27

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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.