Home / 209,311.40-313,967.10-190,940.60

Finding the Fourth Proportional to 209,311.40, 313,967.10 and 190,940.60

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Solution

The fourth proportional to 209,311.40, 313,967.10 and 190,940.60 is: 286,410.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,311.40 : 313,967.10 = 190,940.60 : x
  2. Step 2: Convert to fraction form
    209,311.40/313,967.10 = 190,940.60/x
  3. Step 3: Cross multiply
    209,311.40x = 313,967.10 × 190,940.60
  4. Step 4: Simplify right side
    209,311.40x = 59,949,066,454.26
  5. Step 5: Solve for x
    x = 59,949,066,454.26/209,311.40
  6. Step 6: Final answer
    x = 286,410.90

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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.