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Finding the Fourth Proportional to 353,180.10, 530,103.10 and 128,757.45

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Solution

The fourth proportional to 353,180.10, 530,103.10 and 128,757.45 is: 193,257.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,180.10 : 530,103.10 = 128,757.45 : x
  2. Step 2: Convert to fraction form
    353,180.10/530,103.10 = 128,757.45/x
  3. Step 3: Cross multiply
    353,180.10x = 530,103.10 × 128,757.45
  4. Step 4: Simplify right side
    353,180.10x = 68,254,723,393.10
  5. Step 5: Solve for x
    x = 68,254,723,393.10/353,180.10
  6. Step 6: Final answer
    x = 193,257.56

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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.