Home / 353,498.10-529,932.84-128,816.28

Finding the Fourth Proportional to 353,498.10, 529,932.84 and 128,816.28

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Solution

The fourth proportional to 353,498.10, 529,932.84 and 128,816.28 is: 193,109.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,498.10 : 529,932.84 = 128,816.28 : x
  2. Step 2: Convert to fraction form
    353,498.10/529,932.84 = 128,816.28/x
  3. Step 3: Cross multiply
    353,498.10x = 529,932.84 × 128,816.28
  4. Step 4: Simplify right side
    353,498.10x = 68,263,977,098.64
  5. Step 5: Solve for x
    x = 68,263,977,098.64/353,498.10
  6. Step 6: Final answer
    x = 193,109.88

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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.