Home / 398,383.10-597,139.75-196,118.40

Finding the Fourth Proportional to 398,383.10, 597,139.75 and 196,118.40

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Solution

The fourth proportional to 398,383.10, 597,139.75 and 196,118.40 is: 293,963.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,383.10 : 597,139.75 = 196,118.40 : x
  2. Step 2: Convert to fraction form
    398,383.10/597,139.75 = 196,118.40/x
  3. Step 3: Cross multiply
    398,383.10x = 597,139.75 × 196,118.40
  4. Step 4: Simplify right side
    398,383.10x = 117,110,094,830.82
  5. Step 5: Solve for x
    x = 117,110,094,830.82/398,383.10
  6. Step 6: Final answer
    x = 293,963.51

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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.