Home / 398,204.16-597,288.78-128,326.26

Finding the Fourth Proportional to 398,204.16, 597,288.78 and 128,326.26

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Solution

The fourth proportional to 398,204.16, 597,288.78 and 128,326.26 is: 192,483.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,204.16 : 597,288.78 = 128,326.26 : x
  2. Step 2: Convert to fraction form
    398,204.16/597,288.78 = 128,326.26/x
  3. Step 3: Cross multiply
    398,204.16x = 597,288.78 × 128,326.26
  4. Step 4: Simplify right side
    398,204.16x = 76,647,835,277.36
  5. Step 5: Solve for x
    x = 76,647,835,277.36/398,204.16
  6. Step 6: Final answer
    x = 192,483.76

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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.