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Finding the Third Proportional to 321,336 and 498,159

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Solution

The third proportional to 321,336 and 498,159 is: 772,283.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,336 : 498,159 = 498,159 : x
  2. Step 2: Convert to fraction form
    321,336/498,159 = 498,159/x
  3. Step 3: Cross multiply
    321,336x = 498,159 × 498,159
  4. Step 4: Simplify right side
    321,336x = 248,162,389,281
  5. Step 5: Solve for x
    x = 248,162,389,281/321,336
  6. Step 6: Final answer
    x = 772,283.18

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.