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Finding the Fourth Proportional to 207,485.22, 311,116.44 and 65,303.88

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Solution

The fourth proportional to 207,485.22, 311,116.44 and 65,303.88 is: 97,920.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,485.22 : 311,116.44 = 65,303.88 : x
  2. Step 2: Convert to fraction form
    207,485.22/311,116.44 = 65,303.88/x
  3. Step 3: Cross multiply
    207,485.22x = 311,116.44 × 65,303.88
  4. Step 4: Simplify right side
    207,485.22x = 20,317,110,663.79
  5. Step 5: Solve for x
    x = 20,317,110,663.79/207,485.22
  6. Step 6: Final answer
    x = 97,920.76

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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.