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Finding the Fourth Proportional to 328,506.40, 492,759.60 and 222,218.20

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Solution

The fourth proportional to 328,506.40, 492,759.60 and 222,218.20 is: 333,327.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,506.40 : 492,759.60 = 222,218.20 : x
  2. Step 2: Convert to fraction form
    328,506.40/492,759.60 = 222,218.20/x
  3. Step 3: Cross multiply
    328,506.40x = 492,759.60 × 222,218.20
  4. Step 4: Simplify right side
    328,506.40x = 109,500,151,344.72
  5. Step 5: Solve for x
    x = 109,500,151,344.72/328,506.40
  6. Step 6: Final answer
    x = 333,327.30

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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.