Home / 348,690.85-479,683.38-305,475.73

Finding the Fourth Proportional to 348,690.85, 479,683.38 and 305,475.73

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Solution

The fourth proportional to 348,690.85, 479,683.38 and 305,475.73 is: 420,233.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,690.85 : 479,683.38 = 305,475.73 : x
  2. Step 2: Convert to fraction form
    348,690.85/479,683.38 = 305,475.73/x
  3. Step 3: Cross multiply
    348,690.85x = 479,683.38 × 305,475.73
  4. Step 4: Simplify right side
    348,690.85x = 146,531,630,674.37
  5. Step 5: Solve for x
    x = 146,531,630,674.37/348,690.85
  6. Step 6: Final answer
    x = 420,233.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.