Home / 455,217.40-682,279.35-188,840.80

Finding the Fourth Proportional to 455,217.40, 682,279.35 and 188,840.80

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Solution

The fourth proportional to 455,217.40, 682,279.35 and 188,840.80 is: 283,034.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,217.40 : 682,279.35 = 188,840.80 : x
  2. Step 2: Convert to fraction form
    455,217.40/682,279.35 = 188,840.80/x
  3. Step 3: Cross multiply
    455,217.40x = 682,279.35 × 188,840.80
  4. Step 4: Simplify right side
    455,217.40x = 128,842,178,277.48
  5. Step 5: Solve for x
    x = 128,842,178,277.48/455,217.40
  6. Step 6: Final answer
    x = 283,034.39

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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.