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Finding the Fourth Proportional to 275,698.20, 386,764.80 and 275,698.20

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Solution

The fourth proportional to 275,698.20, 386,764.80 and 275,698.20 is: 386,764.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,698.20 : 386,764.80 = 275,698.20 : x
  2. Step 2: Convert to fraction form
    275,698.20/386,764.80 = 275,698.20/x
  3. Step 3: Cross multiply
    275,698.20x = 386,764.80 × 275,698.20
  4. Step 4: Simplify right side
    275,698.20x = 106,630,359,183.36
  5. Step 5: Solve for x
    x = 106,630,359,183.36/275,698.20
  6. Step 6: Final answer
    x = 386,764.80

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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.