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Finding the Fourth Proportional to 318,233.85, 439,165.22 and 173,039.73

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Solution

The fourth proportional to 318,233.85, 439,165.22 and 173,039.73 is: 238,796.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,233.85 : 439,165.22 = 173,039.73 : x
  2. Step 2: Convert to fraction form
    318,233.85/439,165.22 = 173,039.73/x
  3. Step 3: Cross multiply
    318,233.85x = 439,165.22 × 173,039.73
  4. Step 4: Simplify right side
    318,233.85x = 75,993,031,094.19
  5. Step 5: Solve for x
    x = 75,993,031,094.19/318,233.85
  6. Step 6: Final answer
    x = 238,796.19

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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.