Home / 330,918.80-496,135.20-131,140.40

Finding the Fourth Proportional to 330,918.80, 496,135.20 and 131,140.40

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Solution

The fourth proportional to 330,918.80, 496,135.20 and 131,140.40 is: 196,614.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,918.80 : 496,135.20 = 131,140.40 : x
  2. Step 2: Convert to fraction form
    330,918.80/496,135.20 = 131,140.40/x
  3. Step 3: Cross multiply
    330,918.80x = 496,135.20 × 131,140.40
  4. Step 4: Simplify right side
    330,918.80x = 65,063,368,582.08
  5. Step 5: Solve for x
    x = 65,063,368,582.08/330,918.80
  6. Step 6: Final answer
    x = 196,614.30

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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.