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Finding the Fourth Proportional to 206,764.20, 310,200.30 and 66,526.20

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Solution

The fourth proportional to 206,764.20, 310,200.30 and 66,526.20 is: 99,806.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,764.20 : 310,200.30 = 66,526.20 : x
  2. Step 2: Convert to fraction form
    206,764.20/310,200.30 = 66,526.20/x
  3. Step 3: Cross multiply
    206,764.20x = 310,200.30 × 66,526.20
  4. Step 4: Simplify right side
    206,764.20x = 20,636,447,197.86
  5. Step 5: Solve for x
    x = 20,636,447,197.86/206,764.20
  6. Step 6: Final answer
    x = 99,806.67

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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.