Home / 398,731.20-598,269.60-201,739.20

Finding the Fourth Proportional to 398,731.20, 598,269.60 and 201,739.20

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Solution

The fourth proportional to 398,731.20, 598,269.60 and 201,739.20 is: 302,696.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,731.20 : 598,269.60 = 201,739.20 : x
  2. Step 2: Convert to fraction form
    398,731.20/598,269.60 = 201,739.20/x
  3. Step 3: Cross multiply
    398,731.20x = 598,269.60 × 201,739.20
  4. Step 4: Simplify right side
    398,731.20x = 120,694,430,488.32
  5. Step 5: Solve for x
    x = 120,694,430,488.32/398,731.20
  6. Step 6: Final answer
    x = 302,696.23

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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.