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Finding the Fourth Proportional to 479,441.16, 719,482.80 and 198,958.68

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Solution

The fourth proportional to 479,441.16, 719,482.80 and 198,958.68 is: 298,571.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,441.16 : 719,482.80 = 198,958.68 : x
  2. Step 2: Convert to fraction form
    479,441.16/719,482.80 = 198,958.68/x
  3. Step 3: Cross multiply
    479,441.16x = 719,482.80 × 198,958.68
  4. Step 4: Simplify right side
    479,441.16x = 143,147,348,170.70
  5. Step 5: Solve for x
    x = 143,147,348,170.70/479,441.16
  6. Step 6: Final answer
    x = 298,571.25

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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.