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Finding the Fourth Proportional to 248,811.70, 373,217.55 and 149,278.90

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Solution

The fourth proportional to 248,811.70, 373,217.55 and 149,278.90 is: 223,918.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,811.70 : 373,217.55 = 149,278.90 : x
  2. Step 2: Convert to fraction form
    248,811.70/373,217.55 = 149,278.90/x
  3. Step 3: Cross multiply
    248,811.70x = 373,217.55 × 149,278.90
  4. Step 4: Simplify right side
    248,811.70x = 55,713,505,324.70
  5. Step 5: Solve for x
    x = 55,713,505,324.70/248,811.70
  6. Step 6: Final answer
    x = 223,918.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.