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Finding the Fourth Proportional to 439,268.40, 658,902.60 and 261,975.60

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Solution

The fourth proportional to 439,268.40, 658,902.60 and 261,975.60 is: 392,963.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,268.40 : 658,902.60 = 261,975.60 : x
  2. Step 2: Convert to fraction form
    439,268.40/658,902.60 = 261,975.60/x
  3. Step 3: Cross multiply
    439,268.40x = 658,902.60 × 261,975.60
  4. Step 4: Simplify right side
    439,268.40x = 172,616,403,976.56
  5. Step 5: Solve for x
    x = 172,616,403,976.56/439,268.40
  6. Step 6: Final answer
    x = 392,963.40

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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.