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Finding the Third Proportional to 256,133.75 and 385,027.50

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Solution

The third proportional to 256,133.75 and 385,027.50 is: 578,784.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,133.75 : 385,027.50 = 385,027.50 : x
  2. Step 2: Convert to fraction form
    256,133.75/385,027.50 = 385,027.50/x
  3. Step 3: Cross multiply
    256,133.75x = 385,027.50 × 385,027.50
  4. Step 4: Simplify right side
    256,133.75x = 148,246,175,756.25
  5. Step 5: Solve for x
    x = 148,246,175,756.25/256,133.75
  6. Step 6: Final answer
    x = 578,784.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.