Home / 215,966.40-323,949.60-75,739.20

Finding the Fourth Proportional to 215,966.40, 323,949.60 and 75,739.20

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Solution

The fourth proportional to 215,966.40, 323,949.60 and 75,739.20 is: 113,608.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,966.40 : 323,949.60 = 75,739.20 : x
  2. Step 2: Convert to fraction form
    215,966.40/323,949.60 = 75,739.20/x
  3. Step 3: Cross multiply
    215,966.40x = 323,949.60 × 75,739.20
  4. Step 4: Simplify right side
    215,966.40x = 24,535,683,544.32
  5. Step 5: Solve for x
    x = 24,535,683,544.32/215,966.40
  6. Step 6: Final answer
    x = 113,608.80

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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.