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Finding the Third Proportional to 153,216 and 336,618

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Solution

The third proportional to 153,216 and 336,618 is: 739,555.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,216 : 336,618 = 336,618 : x
  2. Step 2: Convert to fraction form
    153,216/336,618 = 336,618/x
  3. Step 3: Cross multiply
    153,216x = 336,618 × 336,618
  4. Step 4: Simplify right side
    153,216x = 113,311,677,924
  5. Step 5: Solve for x
    x = 113,311,677,924/153,216
  6. Step 6: Final answer
    x = 739,555.12

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.