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Finding the Third Proportional to 118,349 and 257,434

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Solution

The third proportional to 118,349 and 257,434 is: 559,973.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,349 : 257,434 = 257,434 : x
  2. Step 2: Convert to fraction form
    118,349/257,434 = 257,434/x
  3. Step 3: Cross multiply
    118,349x = 257,434 × 257,434
  4. Step 4: Simplify right side
    118,349x = 66,272,264,356
  5. Step 5: Solve for x
    x = 66,272,264,356/118,349
  6. Step 6: Final answer
    x = 559,973.17

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.