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Finding the Fourth Proportional to 517,226.50, 775,839.75 and 143,249.50

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Solution

The fourth proportional to 517,226.50, 775,839.75 and 143,249.50 is: 214,874.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,226.50 : 775,839.75 = 143,249.50 : x
  2. Step 2: Convert to fraction form
    517,226.50/775,839.75 = 143,249.50/x
  3. Step 3: Cross multiply
    517,226.50x = 775,839.75 × 143,249.50
  4. Step 4: Simplify right side
    517,226.50x = 111,138,656,267.63
  5. Step 5: Solve for x
    x = 111,138,656,267.63/517,226.50
  6. Step 6: Final answer
    x = 214,874.25

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Similar ratio
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1.5x scale

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.