Home / 218,779.56-328,093.43-76,621.69

Finding the Fourth Proportional to 218,779.56, 328,093.43 and 76,621.69

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Solution

The fourth proportional to 218,779.56, 328,093.43 and 76,621.69 is: 114,905.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,779.56 : 328,093.43 = 76,621.69 : x
  2. Step 2: Convert to fraction form
    218,779.56/328,093.43 = 76,621.69/x
  3. Step 3: Cross multiply
    218,779.56x = 328,093.43 × 76,621.69
  4. Step 4: Simplify right side
    218,779.56x = 25,139,072,701.39
  5. Step 5: Solve for x
    x = 25,139,072,701.39/218,779.56
  6. Step 6: Final answer
    x = 114,905.95

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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.