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Finding the Fourth Proportional to 342,329.22, 472,255.14 and 221,509.48

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Solution

The fourth proportional to 342,329.22, 472,255.14 and 221,509.48 is: 305,580.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,329.22 : 472,255.14 = 221,509.48 : x
  2. Step 2: Convert to fraction form
    342,329.22/472,255.14 = 221,509.48/x
  3. Step 3: Cross multiply
    342,329.22x = 472,255.14 × 221,509.48
  4. Step 4: Simplify right side
    342,329.22x = 104,608,990,488.73
  5. Step 5: Solve for x
    x = 104,608,990,488.73/342,329.22
  6. Step 6: Final answer
    x = 305,580.08

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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.