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Finding the Third Proportional to 276,615 and 417,465

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Solution

The third proportional to 276,615 and 417,465 is: 630,034.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,615 : 417,465 = 417,465 : x
  2. Step 2: Convert to fraction form
    276,615/417,465 = 417,465/x
  3. Step 3: Cross multiply
    276,615x = 417,465 × 417,465
  4. Step 4: Simplify right side
    276,615x = 174,277,026,225
  5. Step 5: Solve for x
    x = 174,277,026,225/276,615
  6. Step 6: Final answer
    x = 630,034.62

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.