Home / 399,110.80-598,836.30-209,716.60

Finding the Fourth Proportional to 399,110.80, 598,836.30 and 209,716.60

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Solution

The fourth proportional to 399,110.80, 598,836.30 and 209,716.60 is: 314,664.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,110.80 : 598,836.30 = 209,716.60 : x
  2. Step 2: Convert to fraction form
    399,110.80/598,836.30 = 209,716.60/x
  3. Step 3: Cross multiply
    399,110.80x = 598,836.30 × 209,716.60
  4. Step 4: Simplify right side
    399,110.80x = 125,585,912,792.58
  5. Step 5: Solve for x
    x = 125,585,912,792.58/399,110.80
  6. Step 6: Final answer
    x = 314,664.28

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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.