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Finding the Fourth Proportional to 318,092.75, 438,968.91 and 182,128.79

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Solution

The fourth proportional to 318,092.75, 438,968.91 and 182,128.79 is: 251,338.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,092.75 : 438,968.91 = 182,128.79 : x
  2. Step 2: Convert to fraction form
    318,092.75/438,968.91 = 182,128.79/x
  3. Step 3: Cross multiply
    318,092.75x = 438,968.91 × 182,128.79
  4. Step 4: Simplify right side
    318,092.75x = 79,948,876,425.92
  5. Step 5: Solve for x
    x = 79,948,876,425.92/318,092.75
  6. Step 6: Final answer
    x = 251,338.25

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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.