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Finding the Fourth Proportional to 253,775.52, 380,835.54 and 135,531.72

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Solution

The fourth proportional to 253,775.52, 380,835.54 and 135,531.72 is: 203,389.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,775.52 : 380,835.54 = 135,531.72 : x
  2. Step 2: Convert to fraction form
    253,775.52/380,835.54 = 135,531.72/x
  3. Step 3: Cross multiply
    253,775.52x = 380,835.54 × 135,531.72
  4. Step 4: Simplify right side
    253,775.52x = 51,615,295,773.33
  5. Step 5: Solve for x
    x = 51,615,295,773.33/253,775.52
  6. Step 6: Final answer
    x = 203,389.58

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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.