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Finding the Fourth Proportional to 207,322.40, 310,983.60 and 67,181.60

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Solution

The fourth proportional to 207,322.40, 310,983.60 and 67,181.60 is: 100,772.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,322.40 : 310,983.60 = 67,181.60 : x
  2. Step 2: Convert to fraction form
    207,322.40/310,983.60 = 67,181.60/x
  3. Step 3: Cross multiply
    207,322.40x = 310,983.60 × 67,181.60
  4. Step 4: Simplify right side
    207,322.40x = 20,892,375,821.76
  5. Step 5: Solve for x
    x = 20,892,375,821.76/207,322.40
  6. Step 6: Final answer
    x = 100,772.40

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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.