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Finding the Third Proportional to 238,500 and 505,428

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Solution

The third proportional to 238,500 and 505,428 is: 1,071,100.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,500 : 505,428 = 505,428 : x
  2. Step 2: Convert to fraction form
    238,500/505,428 = 505,428/x
  3. Step 3: Cross multiply
    238,500x = 505,428 × 505,428
  4. Step 4: Simplify right side
    238,500x = 255,457,463,184
  5. Step 5: Solve for x
    x = 255,457,463,184/238,500
  6. Step 6: Final answer
    x = 1,071,100.47

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.