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Finding the Third Proportional to 208,278.75 and 431,326.50

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Solution

The third proportional to 208,278.75 and 431,326.50 is: 893,238.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,278.75 : 431,326.50 = 431,326.50 : x
  2. Step 2: Convert to fraction form
    208,278.75/431,326.50 = 431,326.50/x
  3. Step 3: Cross multiply
    208,278.75x = 431,326.50 × 431,326.50
  4. Step 4: Simplify right side
    208,278.75x = 186,042,549,602.25
  5. Step 5: Solve for x
    x = 186,042,549,602.25/208,278.75
  6. Step 6: Final answer
    x = 893,238.27

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Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.