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Finding the Fourth Proportional to 448,966.60, 673,449.90 and 212,770.60

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Solution

The fourth proportional to 448,966.60, 673,449.90 and 212,770.60 is: 319,155.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,966.60 : 673,449.90 = 212,770.60 : x
  2. Step 2: Convert to fraction form
    448,966.60/673,449.90 = 212,770.60/x
  3. Step 3: Cross multiply
    448,966.60x = 673,449.90 × 212,770.60
  4. Step 4: Simplify right side
    448,966.60x = 143,290,339,292.94
  5. Step 5: Solve for x
    x = 143,290,339,292.94/448,966.60
  6. Step 6: Final answer
    x = 319,155.90

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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.