Home / 274,136.40-378,305.64-153,276.30

Finding the Fourth Proportional to 274,136.40, 378,305.64 and 153,276.30

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Solution

The fourth proportional to 274,136.40, 378,305.64 and 153,276.30 is: 211,519.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,136.40 : 378,305.64 = 153,276.30 : x
  2. Step 2: Convert to fraction form
    274,136.40/378,305.64 = 153,276.30/x
  3. Step 3: Cross multiply
    274,136.40x = 378,305.64 × 153,276.30
  4. Step 4: Simplify right side
    274,136.40x = 57,985,288,768.33
  5. Step 5: Solve for x
    x = 57,985,288,768.33/274,136.40
  6. Step 6: Final answer
    x = 211,519.84

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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.