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Finding the Fourth Proportional to 256,993.34, 385,405.44 and 88,509.94

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Solution

The fourth proportional to 256,993.34, 385,405.44 and 88,509.94 is: 132,735.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,993.34 : 385,405.44 = 88,509.94 : x
  2. Step 2: Convert to fraction form
    256,993.34/385,405.44 = 88,509.94/x
  3. Step 3: Cross multiply
    256,993.34x = 385,405.44 × 88,509.94
  4. Step 4: Simplify right side
    256,993.34x = 34,112,212,656.47
  5. Step 5: Solve for x
    x = 34,112,212,656.47/256,993.34
  6. Step 6: Final answer
    x = 132,735.78

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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.