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Finding the Fourth Proportional to 355,676.09, 533,140.46 and 220,739.90

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Solution

The fourth proportional to 355,676.09, 533,140.46 and 220,739.90 is: 330,877.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,676.09 : 533,140.46 = 220,739.90 : x
  2. Step 2: Convert to fraction form
    355,676.09/533,140.46 = 220,739.90/x
  3. Step 3: Cross multiply
    355,676.09x = 533,140.46 × 220,739.90
  4. Step 4: Simplify right side
    355,676.09x = 117,685,368,884.73
  5. Step 5: Solve for x
    x = 117,685,368,884.73/355,676.09
  6. Step 6: Final answer
    x = 330,877.94

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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.