Home / 398,314.08-597,438.36-131,987.52

Finding the Fourth Proportional to 398,314.08, 597,438.36 and 131,987.52

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Solution

The fourth proportional to 398,314.08, 597,438.36 and 131,987.52 is: 197,970.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,314.08 : 597,438.36 = 131,987.52 : x
  2. Step 2: Convert to fraction form
    398,314.08/597,438.36 = 131,987.52/x
  3. Step 3: Cross multiply
    398,314.08x = 597,438.36 × 131,987.52
  4. Step 4: Simplify right side
    398,314.08x = 78,854,407,489.27
  5. Step 5: Solve for x
    x = 78,854,407,489.27/398,314.08
  6. Step 6: Final answer
    x = 197,970.42

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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.