Home / 218,905.80-328,617.90-217,350.60

Finding the Fourth Proportional to 218,905.80, 328,617.90 and 217,350.60

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Solution

The fourth proportional to 218,905.80, 328,617.90 and 217,350.60 is: 326,283.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,905.80 : 328,617.90 = 217,350.60 : x
  2. Step 2: Convert to fraction form
    218,905.80/328,617.90 = 217,350.60/x
  3. Step 3: Cross multiply
    218,905.80x = 328,617.90 × 217,350.60
  4. Step 4: Simplify right side
    218,905.80x = 71,425,297,735.74
  5. Step 5: Solve for x
    x = 71,425,297,735.74/218,905.80
  6. Step 6: Final answer
    x = 326,283.26

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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.