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Finding the Third Proportional to 121,052 and 258,574

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Solution

The third proportional to 121,052 and 258,574 is: 552,328.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,052 : 258,574 = 258,574 : x
  2. Step 2: Convert to fraction form
    121,052/258,574 = 258,574/x
  3. Step 3: Cross multiply
    121,052x = 258,574 × 258,574
  4. Step 4: Simplify right side
    121,052x = 66,860,513,476
  5. Step 5: Solve for x
    x = 66,860,513,476/121,052
  6. Step 6: Final answer
    x = 552,328.86

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.