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Finding the Fourth Proportional to 259,405.96, 388,992.30 and 251,241.16

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Solution

The fourth proportional to 259,405.96, 388,992.30 and 251,241.16 is: 376,748.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,405.96 : 388,992.30 = 251,241.16 : x
  2. Step 2: Convert to fraction form
    259,405.96/388,992.30 = 251,241.16/x
  3. Step 3: Cross multiply
    259,405.96x = 388,992.30 × 251,241.16
  4. Step 4: Simplify right side
    259,405.96x = 97,730,876,683.07
  5. Step 5: Solve for x
    x = 97,730,876,683.07/259,405.96
  6. Step 6: Final answer
    x = 376,748.77

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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.