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Finding the Fourth Proportional to 318,399.51, 439,375.44 and 175,155.87

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Solution

The fourth proportional to 318,399.51, 439,375.44 and 175,155.87 is: 241,706.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,399.51 : 439,375.44 = 175,155.87 : x
  2. Step 2: Convert to fraction form
    318,399.51/439,375.44 = 175,155.87/x
  3. Step 3: Cross multiply
    318,399.51x = 439,375.44 × 175,155.87
  4. Step 4: Simplify right side
    318,399.51x = 76,959,187,449.83
  5. Step 5: Solve for x
    x = 76,959,187,449.83/318,399.51
  6. Step 6: Final answer
    x = 241,706.36

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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.