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Finding the Fourth Proportional to 479,728.56, 719,595.58 and 199,245.81

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Solution

The fourth proportional to 479,728.56, 719,595.58 and 199,245.81 is: 298,869.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,728.56 : 719,595.58 = 199,245.81 : x
  2. Step 2: Convert to fraction form
    479,728.56/719,595.58 = 199,245.81/x
  3. Step 3: Cross multiply
    479,728.56x = 719,595.58 × 199,245.81
  4. Step 4: Simplify right side
    479,728.56x = 143,376,404,209.52
  5. Step 5: Solve for x
    x = 143,376,404,209.52/479,728.56
  6. Step 6: Final answer
    x = 298,869.85

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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.