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Finding the Third Proportional to 257,485 and 377,010

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Solution

The third proportional to 257,485 and 377,010 is: 552,018.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,485 : 377,010 = 377,010 : x
  2. Step 2: Convert to fraction form
    257,485/377,010 = 377,010/x
  3. Step 3: Cross multiply
    257,485x = 377,010 × 377,010
  4. Step 4: Simplify right side
    257,485x = 142,136,540,100
  5. Step 5: Solve for x
    x = 142,136,540,100/257,485
  6. Step 6: Final answer
    x = 552,018.72

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.