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Finding the Third Proportional to 245,609.63 and 390,556.13

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Solution

The third proportional to 245,609.63 and 390,556.13 is: 621,042.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,609.63 : 390,556.13 = 390,556.13 : x
  2. Step 2: Convert to fraction form
    245,609.63/390,556.13 = 390,556.13/x
  3. Step 3: Cross multiply
    245,609.63x = 390,556.13 × 390,556.13
  4. Step 4: Simplify right side
    245,609.63x = 152,534,086,775.02
  5. Step 5: Solve for x
    x = 152,534,086,775.02/245,609.63
  6. Step 6: Final answer
    x = 621,042.79

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.