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Finding the Fourth Proportional to 355,034.42, 489,945.01 and 193,889.51

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Solution

The fourth proportional to 355,034.42, 489,945.01 and 193,889.51 is: 267,566.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,034.42 : 489,945.01 = 193,889.51 : x
  2. Step 2: Convert to fraction form
    355,034.42/489,945.01 = 193,889.51/x
  3. Step 3: Cross multiply
    355,034.42x = 489,945.01 × 193,889.51
  4. Step 4: Simplify right side
    355,034.42x = 94,995,197,915.85
  5. Step 5: Solve for x
    x = 94,995,197,915.85/355,034.42
  6. Step 6: Final answer
    x = 267,566.16

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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.