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Finding the Fourth Proportional to 209,246.40, 313,869.60 and 68,997.60

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Solution

The fourth proportional to 209,246.40, 313,869.60 and 68,997.60 is: 103,496.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,246.40 : 313,869.60 = 68,997.60 : x
  2. Step 2: Convert to fraction form
    209,246.40/313,869.60 = 68,997.60/x
  3. Step 3: Cross multiply
    209,246.40x = 313,869.60 × 68,997.60
  4. Step 4: Simplify right side
    209,246.40x = 21,656,249,112.96
  5. Step 5: Solve for x
    x = 21,656,249,112.96/209,246.40
  6. Step 6: Final answer
    x = 103,496.40

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1.5x scale

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.