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Finding the Fourth Proportional to 245,290.20, 367,643.70 and 220,212.60

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Solution

The fourth proportional to 245,290.20, 367,643.70 and 220,212.60 is: 330,057.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,290.20 : 367,643.70 = 220,212.60 : x
  2. Step 2: Convert to fraction form
    245,290.20/367,643.70 = 220,212.60/x
  3. Step 3: Cross multiply
    245,290.20x = 367,643.70 × 220,212.60
  4. Step 4: Simplify right side
    245,290.20x = 80,959,775,050.62
  5. Step 5: Solve for x
    x = 80,959,775,050.62/245,290.20
  6. Step 6: Final answer
    x = 330,057.11

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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.