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Finding the Third Proportional to 309,673.13 and 478,623.94

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Solution

The third proportional to 309,673.13 and 478,623.94 is: 739,750.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,673.13 : 478,623.94 = 478,623.94 : x
  2. Step 2: Convert to fraction form
    309,673.13/478,623.94 = 478,623.94/x
  3. Step 3: Cross multiply
    309,673.13x = 478,623.94 × 478,623.94
  4. Step 4: Simplify right side
    309,673.13x = 229,080,873,548.00
  5. Step 5: Solve for x
    x = 229,080,873,548.00/309,673.13
  6. Step 6: Final answer
    x = 739,750.58

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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.