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Finding the Fourth Proportional to 253,889.04, 380,928.33 and 135,494.58

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Solution

The fourth proportional to 253,889.04, 380,928.33 and 135,494.58 is: 203,292.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,889.04 : 380,928.33 = 135,494.58 : x
  2. Step 2: Convert to fraction form
    253,889.04/380,928.33 = 135,494.58/x
  3. Step 3: Cross multiply
    253,889.04x = 380,928.33 × 135,494.58
  4. Step 4: Simplify right side
    253,889.04x = 51,613,724,083.45
  5. Step 5: Solve for x
    x = 51,613,724,083.45/253,889.04
  6. Step 6: Final answer
    x = 203,292.45

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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.