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Finding the Fourth Proportional to 355,044.06, 489,958.29 and 193,899.15

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Solution

The fourth proportional to 355,044.06, 489,958.29 and 193,899.15 is: 267,579.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,044.06 : 489,958.29 = 193,899.15 : x
  2. Step 2: Convert to fraction form
    355,044.06/489,958.29 = 193,899.15/x
  3. Step 3: Cross multiply
    355,044.06x = 489,958.29 × 193,899.15
  4. Step 4: Simplify right side
    355,044.06x = 95,002,495,966.45
  5. Step 5: Solve for x
    x = 95,002,495,966.45/355,044.06
  6. Step 6: Final answer
    x = 267,579.45

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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.