Home / 411,828.21-618,141.78-198,746.08

Finding the Fourth Proportional to 411,828.21, 618,141.78 and 198,746.08

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Solution

The fourth proportional to 411,828.21, 618,141.78 and 198,746.08 is: 298,311.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,828.21 : 618,141.78 = 198,746.08 : x
  2. Step 2: Convert to fraction form
    411,828.21/618,141.78 = 198,746.08/x
  3. Step 3: Cross multiply
    411,828.21x = 618,141.78 × 198,746.08
  4. Step 4: Simplify right side
    411,828.21x = 122,853,255,659.22
  5. Step 5: Solve for x
    x = 122,853,255,659.22/411,828.21
  6. Step 6: Final answer
    x = 298,311.90

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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.