Home / 217,045.72-299,488.26-121,556.44

Finding the Fourth Proportional to 217,045.72, 299,488.26 and 121,556.44

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Solution

The fourth proportional to 217,045.72, 299,488.26 and 121,556.44 is: 167,728.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,045.72 : 299,488.26 = 121,556.44 : x
  2. Step 2: Convert to fraction form
    217,045.72/299,488.26 = 121,556.44/x
  3. Step 3: Cross multiply
    217,045.72x = 299,488.26 × 121,556.44
  4. Step 4: Simplify right side
    217,045.72x = 36,404,726,707.39
  5. Step 5: Solve for x
    x = 36,404,726,707.39/217,045.72
  6. Step 6: Final answer
    x = 167,728.38

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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.