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Finding the Third Proportional to 165,415.50 and 358,831

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Solution

The third proportional to 165,415.50 and 358,831 is: 778,401.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,415.50 : 358,831 = 358,831 : x
  2. Step 2: Convert to fraction form
    165,415.50/358,831 = 358,831/x
  3. Step 3: Cross multiply
    165,415.50x = 358,831 × 358,831
  4. Step 4: Simplify right side
    165,415.50x = 128,759,686,561
  5. Step 5: Solve for x
    x = 128,759,686,561/165,415.50
  6. Step 6: Final answer
    x = 778,401.58

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.