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Finding the Third Proportional to 255,219 and 391,750.50

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Solution

The third proportional to 255,219 and 391,750.50 is: 601,320.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,219 : 391,750.50 = 391,750.50 : x
  2. Step 2: Convert to fraction form
    255,219/391,750.50 = 391,750.50/x
  3. Step 3: Cross multiply
    255,219x = 391,750.50 × 391,750.50
  4. Step 4: Simplify right side
    255,219x = 153,468,454,250.25
  5. Step 5: Solve for x
    x = 153,468,454,250.25/255,219
  6. Step 6: Final answer
    x = 601,320.65

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.