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Finding the Fourth Proportional to 253,640.37, 380,448.70 and 103,843.63

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Solution

The fourth proportional to 253,640.37, 380,448.70 and 103,843.63 is: 155,760.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,640.37 : 380,448.70 = 103,843.63 : x
  2. Step 2: Convert to fraction form
    253,640.37/380,448.70 = 103,843.63/x
  3. Step 3: Cross multiply
    253,640.37x = 380,448.70 × 103,843.63
  4. Step 4: Simplify right side
    253,640.37x = 39,507,174,036.78
  5. Step 5: Solve for x
    x = 39,507,174,036.78/253,640.37
  6. Step 6: Final answer
    x = 155,760.59

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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.