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Finding the Third Proportional to 207,987.75 and 320,792.91

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Solution

The third proportional to 207,987.75 and 320,792.91 is: 494,779.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,987.75 : 320,792.91 = 320,792.91 : x
  2. Step 2: Convert to fraction form
    207,987.75/320,792.91 = 320,792.91/x
  3. Step 3: Cross multiply
    207,987.75x = 320,792.91 × 320,792.91
  4. Step 4: Simplify right side
    207,987.75x = 102,908,088,700.32
  5. Step 5: Solve for x
    x = 102,908,088,700.32/207,987.75
  6. Step 6: Final answer
    x = 494,779.57

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.