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Finding the Fourth Proportional to 321,836.20, 451,503.80 and 321,836.20

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Solution

The fourth proportional to 321,836.20, 451,503.80 and 321,836.20 is: 451,503.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,836.20 : 451,503.80 = 321,836.20 : x
  2. Step 2: Convert to fraction form
    321,836.20/451,503.80 = 321,836.20/x
  3. Step 3: Cross multiply
    321,836.20x = 451,503.80 × 321,836.20
  4. Step 4: Simplify right side
    321,836.20x = 145,310,267,277.56
  5. Step 5: Solve for x
    x = 145,310,267,277.56/321,836.20
  6. Step 6: Final answer
    x = 451,503.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.