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Finding the Fourth Proportional to 207,241.26, 310,912.92 and 66,999.90

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Solution

The fourth proportional to 207,241.26, 310,912.92 and 66,999.90 is: 100,516.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,241.26 : 310,912.92 = 66,999.90 : x
  2. Step 2: Convert to fraction form
    207,241.26/310,912.92 = 66,999.90/x
  3. Step 3: Cross multiply
    207,241.26x = 310,912.92 × 66,999.90
  4. Step 4: Simplify right side
    207,241.26x = 20,831,134,548.71
  5. Step 5: Solve for x
    x = 20,831,134,548.71/207,241.26
  6. Step 6: Final answer
    x = 100,516.35

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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.