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Finding the Fourth Proportional to 318,552.36, 439,419.42 and 199,113

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Solution

The fourth proportional to 318,552.36, 439,419.42 and 199,113 is: 274,661.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,552.36 : 439,419.42 = 199,113 : x
  2. Step 2: Convert to fraction form
    318,552.36/439,419.42 = 199,113/x
  3. Step 3: Cross multiply
    318,552.36x = 439,419.42 × 199,113
  4. Step 4: Simplify right side
    318,552.36x = 87,494,118,974.46
  5. Step 5: Solve for x
    x = 87,494,118,974.46/318,552.36
  6. Step 6: Final answer
    x = 274,661.66

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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.