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Finding the Third Proportional to 163,904 and 253,135

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Solution

The third proportional to 163,904 and 253,135 is: 390,944.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,904 : 253,135 = 253,135 : x
  2. Step 2: Convert to fraction form
    163,904/253,135 = 253,135/x
  3. Step 3: Cross multiply
    163,904x = 253,135 × 253,135
  4. Step 4: Simplify right side
    163,904x = 64,077,328,225
  5. Step 5: Solve for x
    x = 64,077,328,225/163,904
  6. Step 6: Final answer
    x = 390,944.26

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.