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Finding the Fourth Proportional to 274,046.98, 378,136.46 and 153,149.62

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Solution

The fourth proportional to 274,046.98, 378,136.46 and 153,149.62 is: 211,319.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,046.98 : 378,136.46 = 153,149.62 : x
  2. Step 2: Convert to fraction form
    274,046.98/378,136.46 = 153,149.62/x
  3. Step 3: Cross multiply
    274,046.98x = 378,136.46 × 153,149.62
  4. Step 4: Simplify right side
    274,046.98x = 57,911,455,157.15
  5. Step 5: Solve for x
    x = 57,911,455,157.15/274,046.98
  6. Step 6: Final answer
    x = 211,319.44

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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.