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Finding the Third Proportional to 120,748 and 257,088

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Solution

The third proportional to 120,748 and 257,088 is: 547,373.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,748 : 257,088 = 257,088 : x
  2. Step 2: Convert to fraction form
    120,748/257,088 = 257,088/x
  3. Step 3: Cross multiply
    120,748x = 257,088 × 257,088
  4. Step 4: Simplify right side
    120,748x = 66,094,239,744
  5. Step 5: Solve for x
    x = 66,094,239,744/120,748
  6. Step 6: Final answer
    x = 547,373.37

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.