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Finding the Third Proportional to 255,705.75 and 538,369.88

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Solution

The third proportional to 255,705.75 and 538,369.88 is: 1,133,498.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,705.75 : 538,369.88 = 538,369.88 : x
  2. Step 2: Convert to fraction form
    255,705.75/538,369.88 = 538,369.88/x
  3. Step 3: Cross multiply
    255,705.75x = 538,369.88 × 538,369.88
  4. Step 4: Simplify right side
    255,705.75x = 289,842,122,307.52
  5. Step 5: Solve for x
    x = 289,842,122,307.52/255,705.75
  6. Step 6: Final answer
    x = 1,133,498.65

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.