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Finding the Third Proportional to 358,760 and 555,180

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Solution

The third proportional to 358,760 and 555,180 is: 859,139.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,760 : 555,180 = 555,180 : x
  2. Step 2: Convert to fraction form
    358,760/555,180 = 555,180/x
  3. Step 3: Cross multiply
    358,760x = 555,180 × 555,180
  4. Step 4: Simplify right side
    358,760x = 308,224,832,400
  5. Step 5: Solve for x
    x = 308,224,832,400/358,760
  6. Step 6: Final answer
    x = 859,139.35

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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.