Home / 217,605.36-300,218.41-142,197.60

Finding the Fourth Proportional to 217,605.36, 300,218.41 and 142,197.60

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Solution

The fourth proportional to 217,605.36, 300,218.41 and 142,197.60 is: 196,182.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,605.36 : 300,218.41 = 142,197.60 : x
  2. Step 2: Convert to fraction form
    217,605.36/300,218.41 = 142,197.60/x
  3. Step 3: Cross multiply
    217,605.36x = 300,218.41 × 142,197.60
  4. Step 4: Simplify right side
    217,605.36x = 42,690,337,377.82
  5. Step 5: Solve for x
    x = 42,690,337,377.82/217,605.36
  6. Step 6: Final answer
    x = 196,182.38

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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.