Home / 256,231.76-384,090.36-87,636.84

Finding the Fourth Proportional to 256,231.76, 384,090.36 and 87,636.84

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Solution

The fourth proportional to 256,231.76, 384,090.36 and 87,636.84 is: 131,367.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,231.76 : 384,090.36 = 87,636.84 : x
  2. Step 2: Convert to fraction form
    256,231.76/384,090.36 = 87,636.84/x
  3. Step 3: Cross multiply
    256,231.76x = 384,090.36 × 87,636.84
  4. Step 4: Simplify right side
    256,231.76x = 33,660,463,655.89
  5. Step 5: Solve for x
    x = 33,660,463,655.89/256,231.76
  6. Step 6: Final answer
    x = 131,367.26

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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.