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Finding the Third Proportional to 258,021.84 and 398,537.44

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Solution

The third proportional to 258,021.84 and 398,537.44 is: 615,576.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,021.84 : 398,537.44 = 398,537.44 : x
  2. Step 2: Convert to fraction form
    258,021.84/398,537.44 = 398,537.44/x
  3. Step 3: Cross multiply
    258,021.84x = 398,537.44 × 398,537.44
  4. Step 4: Simplify right side
    258,021.84x = 158,832,089,089.07
  5. Step 5: Solve for x
    x = 158,832,089,089.07/258,021.84
  6. Step 6: Final answer
    x = 615,576.13

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.