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Finding the Fourth Proportional to 253,359.37, 380,039.05 and 205,917.19

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Solution

The fourth proportional to 253,359.37, 380,039.05 and 205,917.19 is: 308,875.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,359.37 : 380,039.05 = 205,917.19 : x
  2. Step 2: Convert to fraction form
    253,359.37/380,039.05 = 205,917.19/x
  3. Step 3: Cross multiply
    253,359.37x = 380,039.05 × 205,917.19
  4. Step 4: Simplify right side
    253,359.37x = 78,256,571,801.38
  5. Step 5: Solve for x
    x = 78,256,571,801.38/253,359.37
  6. Step 6: Final answer
    x = 308,875.78

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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.