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Finding the Fourth Proportional to 207,479.96, 311,108.56 and 65,298.64

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Solution

The fourth proportional to 207,479.96, 311,108.56 and 65,298.64 is: 97,912.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,479.96 : 311,108.56 = 65,298.64 : x
  2. Step 2: Convert to fraction form
    207,479.96/311,108.56 = 65,298.64/x
  3. Step 3: Cross multiply
    207,479.96x = 311,108.56 × 65,298.64
  4. Step 4: Simplify right side
    207,479.96x = 20,314,965,860.36
  5. Step 5: Solve for x
    x = 20,314,965,860.36/207,479.96
  6. Step 6: Final answer
    x = 97,912.91

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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.