Home / 217,961.36-326,917.20-75,779.36

Finding the Fourth Proportional to 217,961.36, 326,917.20 and 75,779.36

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Solution

The fourth proportional to 217,961.36, 326,917.20 and 75,779.36 is: 113,660.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,961.36 : 326,917.20 = 75,779.36 : x
  2. Step 2: Convert to fraction form
    217,961.36/326,917.20 = 75,779.36/x
  3. Step 3: Cross multiply
    217,961.36x = 326,917.20 × 75,779.36
  4. Step 4: Simplify right side
    217,961.36x = 24,773,576,188.99
  5. Step 5: Solve for x
    x = 24,773,576,188.99/217,961.36
  6. Step 6: Final answer
    x = 113,660.40

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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.