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Finding the Fourth Proportional to 485,375.68, 728,391.30 and 169,835.32

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Solution

The fourth proportional to 485,375.68, 728,391.30 and 169,835.32 is: 254,867.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,375.68 : 728,391.30 = 169,835.32 : x
  2. Step 2: Convert to fraction form
    485,375.68/728,391.30 = 169,835.32/x
  3. Step 3: Cross multiply
    485,375.68x = 728,391.30 × 169,835.32
  4. Step 4: Simplify right side
    485,375.68x = 123,706,569,520.72
  5. Step 5: Solve for x
    x = 123,706,569,520.72/485,375.68
  6. Step 6: Final answer
    x = 254,867.67

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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.