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Finding the Fourth Proportional to 342,668.25, 472,816.58 and 221,792.76

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Solution

The fourth proportional to 342,668.25, 472,816.58 and 221,792.76 is: 306,031.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,668.25 : 472,816.58 = 221,792.76 : x
  2. Step 2: Convert to fraction form
    342,668.25/472,816.58 = 221,792.76/x
  3. Step 3: Cross multiply
    342,668.25x = 472,816.58 × 221,792.76
  4. Step 4: Simplify right side
    342,668.25x = 104,867,293,143.00
  5. Step 5: Solve for x
    x = 104,867,293,143.00/342,668.25
  6. Step 6: Final answer
    x = 306,031.54

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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.