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Finding the Fourth Proportional to 382,490.40, 573,735.60 and 213,837.60

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Solution

The fourth proportional to 382,490.40, 573,735.60 and 213,837.60 is: 320,756.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,490.40 : 573,735.60 = 213,837.60 : x
  2. Step 2: Convert to fraction form
    382,490.40/573,735.60 = 213,837.60/x
  3. Step 3: Cross multiply
    382,490.40x = 573,735.60 × 213,837.60
  4. Step 4: Simplify right side
    382,490.40x = 122,686,243,738.56
  5. Step 5: Solve for x
    x = 122,686,243,738.56/382,490.40
  6. Step 6: Final answer
    x = 320,756.40

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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.