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Finding the Fourth Proportional to 331,242.80, 496,621.20 and 131,464.40

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Solution

The fourth proportional to 331,242.80, 496,621.20 and 131,464.40 is: 197,100.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,242.80 : 496,621.20 = 131,464.40 : x
  2. Step 2: Convert to fraction form
    331,242.80/496,621.20 = 131,464.40/x
  3. Step 3: Cross multiply
    331,242.80x = 496,621.20 × 131,464.40
  4. Step 4: Simplify right side
    331,242.80x = 65,288,008,085.28
  5. Step 5: Solve for x
    x = 65,288,008,085.28/331,242.80
  6. Step 6: Final answer
    x = 197,100.16

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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.