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Finding the Fourth Proportional to 260,487, 390,781.26 and 110,725.56

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Solution

The fourth proportional to 260,487, 390,781.26 and 110,725.56 is: 166,109.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,487 : 390,781.26 = 110,725.56 : x
  2. Step 2: Convert to fraction form
    260,487/390,781.26 = 110,725.56/x
  3. Step 3: Cross multiply
    260,487x = 390,781.26 × 110,725.56
  4. Step 4: Simplify right side
    260,487x = 43,269,473,851.01
  5. Step 5: Solve for x
    x = 43,269,473,851.01/260,487
  6. Step 6: Final answer
    x = 166,109.92

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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.