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Finding the Fourth Proportional to 330,860.90, 496,291.35 and 131,228.90

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Solution

The fourth proportional to 330,860.90, 496,291.35 and 131,228.90 is: 196,843.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,860.90 : 496,291.35 = 131,228.90 : x
  2. Step 2: Convert to fraction form
    330,860.90/496,291.35 = 131,228.90/x
  3. Step 3: Cross multiply
    330,860.90x = 496,291.35 × 131,228.90
  4. Step 4: Simplify right side
    330,860.90x = 65,127,767,940.02
  5. Step 5: Solve for x
    x = 65,127,767,940.02/330,860.90
  6. Step 6: Final answer
    x = 196,843.35

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Similar ratio
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1.5x scale

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.