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Finding the Fourth Proportional to 485,183.60, 727,807.80 and 165,330.80

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Solution

The fourth proportional to 485,183.60, 727,807.80 and 165,330.80 is: 248,007.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,183.60 : 727,807.80 = 165,330.80 : x
  2. Step 2: Convert to fraction form
    485,183.60/727,807.80 = 165,330.80/x
  3. Step 3: Cross multiply
    485,183.60x = 727,807.80 × 165,330.80
  4. Step 4: Simplify right side
    485,183.60x = 120,329,045,820.24
  5. Step 5: Solve for x
    x = 120,329,045,820.24/485,183.60
  6. Step 6: Final answer
    x = 248,007.24

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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.