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Finding the Fourth Proportional to 307,873.70, 461,810.55 and 208,081.70

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Solution

The fourth proportional to 307,873.70, 461,810.55 and 208,081.70 is: 312,122.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,873.70 : 461,810.55 = 208,081.70 : x
  2. Step 2: Convert to fraction form
    307,873.70/461,810.55 = 208,081.70/x
  3. Step 3: Cross multiply
    307,873.70x = 461,810.55 × 208,081.70
  4. Step 4: Simplify right side
    307,873.70x = 96,094,324,321.94
  5. Step 5: Solve for x
    x = 96,094,324,321.94/307,873.70
  6. Step 6: Final answer
    x = 312,122.55

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1.5x scale

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.