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Finding the Fourth Proportional to 318,092.34, 438,968.36 and 182,128.38

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Solution

The fourth proportional to 318,092.34, 438,968.36 and 182,128.38 is: 251,337.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,092.34 : 438,968.36 = 182,128.38 : x
  2. Step 2: Convert to fraction form
    318,092.34/438,968.36 = 182,128.38/x
  3. Step 3: Cross multiply
    318,092.34x = 438,968.36 × 182,128.38
  4. Step 4: Simplify right side
    318,092.34x = 79,948,595,087.25
  5. Step 5: Solve for x
    x = 79,948,595,087.25/318,092.34
  6. Step 6: Final answer
    x = 251,337.69

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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.