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Finding the Fourth Proportional to 318,092.50, 438,968.57 and 182,128.54

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Solution

The fourth proportional to 318,092.50, 438,968.57 and 182,128.54 is: 251,337.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,092.50 : 438,968.57 = 182,128.54 : x
  2. Step 2: Convert to fraction form
    318,092.50/438,968.57 = 182,128.54/x
  3. Step 3: Cross multiply
    318,092.50x = 438,968.57 × 182,128.54
  4. Step 4: Simplify right side
    318,092.50x = 79,948,704,759.99
  5. Step 5: Solve for x
    x = 79,948,704,759.99/318,092.50
  6. Step 6: Final answer
    x = 251,337.91

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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.