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Finding the Third Proportional to 285,211.13 and 438,428.25

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Solution

The third proportional to 285,211.13 and 438,428.25 is: 673,954.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,211.13 : 438,428.25 = 438,428.25 : x
  2. Step 2: Convert to fraction form
    285,211.13/438,428.25 = 438,428.25/x
  3. Step 3: Cross multiply
    285,211.13x = 438,428.25 × 438,428.25
  4. Step 4: Simplify right side
    285,211.13x = 192,219,330,398.06
  5. Step 5: Solve for x
    x = 192,219,330,398.06/285,211.13
  6. Step 6: Final answer
    x = 673,954.53

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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.