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Finding the Fourth Proportional to 411,991.60, 618,376.20 and 254,527.60

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Solution

The fourth proportional to 411,991.60, 618,376.20 and 254,527.60 is: 382,031.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,991.60 : 618,376.20 = 254,527.60 : x
  2. Step 2: Convert to fraction form
    411,991.60/618,376.20 = 254,527.60/x
  3. Step 3: Cross multiply
    411,991.60x = 618,376.20 × 254,527.60
  4. Step 4: Simplify right side
    411,991.60x = 157,393,810,083.12
  5. Step 5: Solve for x
    x = 157,393,810,083.12/411,991.60
  6. Step 6: Final answer
    x = 382,031.60

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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.