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Finding the Fourth Proportional to 326,720.40, 490,080.60 and 246,886.80

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Solution

The fourth proportional to 326,720.40, 490,080.60 and 246,886.80 is: 370,330.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,720.40 : 490,080.60 = 246,886.80 : x
  2. Step 2: Convert to fraction form
    326,720.40/490,080.60 = 246,886.80/x
  3. Step 3: Cross multiply
    326,720.40x = 490,080.60 × 246,886.80
  4. Step 4: Simplify right side
    326,720.40x = 120,994,431,076.08
  5. Step 5: Solve for x
    x = 120,994,431,076.08/326,720.40
  6. Step 6: Final answer
    x = 370,330.20

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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.