Home / 398,289.16-597,203.70-131,977.90

Finding the Fourth Proportional to 398,289.16, 597,203.70 and 131,977.90

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Solution

The fourth proportional to 398,289.16, 597,203.70 and 131,977.90 is: 197,890.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,289.16 : 597,203.70 = 131,977.90 : x
  2. Step 2: Convert to fraction form
    398,289.16/597,203.70 = 131,977.90/x
  3. Step 3: Cross multiply
    398,289.16x = 597,203.70 × 131,977.90
  4. Step 4: Simplify right side
    398,289.16x = 78,817,690,198.23
  5. Step 5: Solve for x
    x = 78,817,690,198.23/398,289.16
  6. Step 6: Final answer
    x = 197,890.62

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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.