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Finding the Fourth Proportional to 318,396.82, 439,370.28 and 175,133.74

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Solution

The fourth proportional to 318,396.82, 439,370.28 and 175,133.74 is: 241,675.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,396.82 : 439,370.28 = 175,133.74 : x
  2. Step 2: Convert to fraction form
    318,396.82/439,370.28 = 175,133.74/x
  3. Step 3: Cross multiply
    318,396.82x = 439,370.28 × 175,133.74
  4. Step 4: Simplify right side
    318,396.82x = 76,948,560,381.25
  5. Step 5: Solve for x
    x = 76,948,560,381.25/318,396.82
  6. Step 6: Final answer
    x = 241,675.03

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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.