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Finding the Third Proportional to 120,410 and 257,429

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Solution

The third proportional to 120,410 and 257,429 is: 550,367.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,410 : 257,429 = 257,429 : x
  2. Step 2: Convert to fraction form
    120,410/257,429 = 257,429/x
  3. Step 3: Cross multiply
    120,410x = 257,429 × 257,429
  4. Step 4: Simplify right side
    120,410x = 66,269,690,041
  5. Step 5: Solve for x
    x = 66,269,690,041/120,410
  6. Step 6: Final answer
    x = 550,367.00

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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.