Home / 455,123.32-682,659.42-139,579.36

Finding the Fourth Proportional to 455,123.32, 682,659.42 and 139,579.36

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Solution

The fourth proportional to 455,123.32, 682,659.42 and 139,579.36 is: 209,361.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,123.32 : 682,659.42 = 139,579.36 : x
  2. Step 2: Convert to fraction form
    455,123.32/682,659.42 = 139,579.36/x
  3. Step 3: Cross multiply
    455,123.32x = 682,659.42 × 139,579.36
  4. Step 4: Simplify right side
    455,123.32x = 95,285,164,941.57
  5. Step 5: Solve for x
    x = 95,285,164,941.57/455,123.32
  6. Step 6: Final answer
    x = 209,361.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.