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Finding the Third Proportional to 163,440 and 225,072

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Solution

The third proportional to 163,440 and 225,072 is: 309,944.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,440 : 225,072 = 225,072 : x
  2. Step 2: Convert to fraction form
    163,440/225,072 = 225,072/x
  3. Step 3: Cross multiply
    163,440x = 225,072 × 225,072
  4. Step 4: Simplify right side
    163,440x = 50,657,405,184
  5. Step 5: Solve for x
    x = 50,657,405,184/163,440
  6. Step 6: Final answer
    x = 309,944.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.