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Finding the Third Proportional to 285,121.50 and 384,865.50

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Solution

The third proportional to 285,121.50 and 384,865.50 is: 519,502.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,121.50 : 384,865.50 = 384,865.50 : x
  2. Step 2: Convert to fraction form
    285,121.50/384,865.50 = 384,865.50/x
  3. Step 3: Cross multiply
    285,121.50x = 384,865.50 × 384,865.50
  4. Step 4: Simplify right side
    285,121.50x = 148,121,453,090.25
  5. Step 5: Solve for x
    x = 148,121,453,090.25/285,121.50
  6. Step 6: Final answer
    x = 519,502.92

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.