Home / 427,625.17-641,558.85-214,135.36

Finding the Fourth Proportional to 427,625.17, 641,558.85 and 214,135.36

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Solution

The fourth proportional to 427,625.17, 641,558.85 and 214,135.36 is: 321,263.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,625.17 : 641,558.85 = 214,135.36 : x
  2. Step 2: Convert to fraction form
    427,625.17/641,558.85 = 214,135.36/x
  3. Step 3: Cross multiply
    427,625.17x = 641,558.85 × 214,135.36
  4. Step 4: Simplify right side
    427,625.17x = 137,380,435,305.94
  5. Step 5: Solve for x
    x = 137,380,435,305.94/427,625.17
  6. Step 6: Final answer
    x = 321,263.68

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1.5x scale

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.