Home / 274,137.18-378,291.78-153,288.42

Finding the Fourth Proportional to 274,137.18, 378,291.78 and 153,288.42

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Solution

The fourth proportional to 274,137.18, 378,291.78 and 153,288.42 is: 211,528.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,137.18 : 378,291.78 = 153,288.42 : x
  2. Step 2: Convert to fraction form
    274,137.18/378,291.78 = 153,288.42/x
  3. Step 3: Cross multiply
    274,137.18x = 378,291.78 × 153,288.42
  4. Step 4: Simplify right side
    274,137.18x = 57,987,749,255.19
  5. Step 5: Solve for x
    x = 57,987,749,255.19/274,137.18
  6. Step 6: Final answer
    x = 211,528.22

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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.