Home / 274,205.18-378,422.43-153,357.71

Finding the Fourth Proportional to 274,205.18, 378,422.43 and 153,357.71

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Solution

The fourth proportional to 274,205.18, 378,422.43 and 153,357.71 is: 211,644.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,205.18 : 378,422.43 = 153,357.71 : x
  2. Step 2: Convert to fraction form
    274,205.18/378,422.43 = 153,357.71/x
  3. Step 3: Cross multiply
    274,205.18x = 378,422.43 × 153,357.71
  4. Step 4: Simplify right side
    274,205.18x = 58,033,997,277.44
  5. Step 5: Solve for x
    x = 58,033,997,277.44/274,205.18
  6. Step 6: Final answer
    x = 211,644.42

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1.5x scale

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.