Home / 208,201.39-312,302.05-113,511.20

Finding the Fourth Proportional to 208,201.39, 312,302.05 and 113,511.20

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Solution

The fourth proportional to 208,201.39, 312,302.05 and 113,511.20 is: 170,266.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,201.39 : 312,302.05 = 113,511.20 : x
  2. Step 2: Convert to fraction form
    208,201.39/312,302.05 = 113,511.20/x
  3. Step 3: Cross multiply
    208,201.39x = 312,302.05 × 113,511.20
  4. Step 4: Simplify right side
    208,201.39x = 35,449,779,890.40
  5. Step 5: Solve for x
    x = 35,449,779,890.40/208,201.39
  6. Step 6: Final answer
    x = 170,266.78

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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.