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Finding the Third Proportional to 358,776 and 555,174

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Solution

The third proportional to 358,776 and 555,174 is: 859,082.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,776 : 555,174 = 555,174 : x
  2. Step 2: Convert to fraction form
    358,776/555,174 = 555,174/x
  3. Step 3: Cross multiply
    358,776x = 555,174 × 555,174
  4. Step 4: Simplify right side
    358,776x = 308,218,170,276
  5. Step 5: Solve for x
    x = 308,218,170,276/358,776
  6. Step 6: Final answer
    x = 859,082.46

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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.