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Finding the Fourth Proportional to 219,714.44, 303,238.28 and 139,149.45

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Solution

The fourth proportional to 219,714.44, 303,238.28 and 139,149.45 is: 192,046.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,714.44 : 303,238.28 = 139,149.45 : x
  2. Step 2: Convert to fraction form
    219,714.44/303,238.28 = 139,149.45/x
  3. Step 3: Cross multiply
    219,714.44x = 303,238.28 × 139,149.45
  4. Step 4: Simplify right side
    219,714.44x = 42,195,439,880.95
  5. Step 5: Solve for x
    x = 42,195,439,880.95/219,714.44
  6. Step 6: Final answer
    x = 192,046.73

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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.