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Finding the Fourth Proportional to 316,179.54, 436,324.59 and 172,942.38

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Solution

The fourth proportional to 316,179.54, 436,324.59 and 172,942.38 is: 238,658.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,179.54 : 436,324.59 = 172,942.38 : x
  2. Step 2: Convert to fraction form
    316,179.54/436,324.59 = 172,942.38/x
  3. Step 3: Cross multiply
    316,179.54x = 436,324.59 × 172,942.38
  4. Step 4: Simplify right side
    316,179.54x = 75,459,013,047.12
  5. Step 5: Solve for x
    x = 75,459,013,047.12/316,179.54
  6. Step 6: Final answer
    x = 238,658.75

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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.