Home / 398,822.40-598,233.60-118,339.20

Finding the Fourth Proportional to 398,822.40, 598,233.60 and 118,339.20

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Solution

The fourth proportional to 398,822.40, 598,233.60 and 118,339.20 is: 177,508.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,822.40 : 598,233.60 = 118,339.20 : x
  2. Step 2: Convert to fraction form
    398,822.40/598,233.60 = 118,339.20/x
  3. Step 3: Cross multiply
    398,822.40x = 598,233.60 × 118,339.20
  4. Step 4: Simplify right side
    398,822.40x = 70,794,485,637.12
  5. Step 5: Solve for x
    x = 70,794,485,637.12/398,822.40
  6. Step 6: Final answer
    x = 177,508.80

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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.