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Finding the Fourth Proportional to 318,108.94, 438,991.25 and 182,144.97

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Solution

The fourth proportional to 318,108.94, 438,991.25 and 182,144.97 is: 251,360.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,108.94 : 438,991.25 = 182,144.97 : x
  2. Step 2: Convert to fraction form
    318,108.94/438,991.25 = 182,144.97/x
  3. Step 3: Cross multiply
    318,108.94x = 438,991.25 × 182,144.97
  4. Step 4: Simplify right side
    318,108.94x = 79,960,047,150.79
  5. Step 5: Solve for x
    x = 79,960,047,150.79/318,108.94
  6. Step 6: Final answer
    x = 251,360.58

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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.