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Finding the Third Proportional to 256,176 and 385,087.50

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Solution

The third proportional to 256,176 and 385,087.50 is: 578,869.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,176 : 385,087.50 = 385,087.50 : x
  2. Step 2: Convert to fraction form
    256,176/385,087.50 = 385,087.50/x
  3. Step 3: Cross multiply
    256,176x = 385,087.50 × 385,087.50
  4. Step 4: Simplify right side
    256,176x = 148,292,382,656.25
  5. Step 5: Solve for x
    x = 148,292,382,656.25/256,176
  6. Step 6: Final answer
    x = 578,869.15

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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.