Home / 398,919.40-598,233.30-132,688.60

Finding the Fourth Proportional to 398,919.40, 598,233.30 and 132,688.60

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Solution

The fourth proportional to 398,919.40, 598,233.30 and 132,688.60 is: 198,984.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,919.40 : 598,233.30 = 132,688.60 : x
  2. Step 2: Convert to fraction form
    398,919.40/598,233.30 = 132,688.60/x
  3. Step 3: Cross multiply
    398,919.40x = 598,233.30 × 132,688.60
  4. Step 4: Simplify right side
    398,919.40x = 79,378,739,050.38
  5. Step 5: Solve for x
    x = 79,378,739,050.38/398,919.40
  6. Step 6: Final answer
    x = 198,984.40

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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.