Home / 208,257.40-312,386.10-185,512.60

Finding the Fourth Proportional to 208,257.40, 312,386.10 and 185,512.60

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Solution

The fourth proportional to 208,257.40, 312,386.10 and 185,512.60 is: 278,268.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,257.40 : 312,386.10 = 185,512.60 : x
  2. Step 2: Convert to fraction form
    208,257.40/312,386.10 = 185,512.60/x
  3. Step 3: Cross multiply
    208,257.40x = 312,386.10 × 185,512.60
  4. Step 4: Simplify right side
    208,257.40x = 57,951,557,614.86
  5. Step 5: Solve for x
    x = 57,951,557,614.86/208,257.40
  6. Step 6: Final answer
    x = 278,268.90

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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.