Home / 217,631.85-300,456.96-145,015.59

Finding the Fourth Proportional to 217,631.85, 300,456.96 and 145,015.59

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Solution

The fourth proportional to 217,631.85, 300,456.96 and 145,015.59 is: 200,204.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,631.85 : 300,456.96 = 145,015.59 : x
  2. Step 2: Convert to fraction form
    217,631.85/300,456.96 = 145,015.59/x
  3. Step 3: Cross multiply
    217,631.85x = 300,456.96 × 145,015.59
  4. Step 4: Simplify right side
    217,631.85x = 43,570,943,324.01
  5. Step 5: Solve for x
    x = 43,570,943,324.01/217,631.85
  6. Step 6: Final answer
    x = 200,204.81

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1.5x scale

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.