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Finding the Fourth Proportional to 260,308.68, 390,523.17 and 110,553.87

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Solution

The fourth proportional to 260,308.68, 390,523.17 and 110,553.87 is: 165,856.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,308.68 : 390,523.17 = 110,553.87 : x
  2. Step 2: Convert to fraction form
    260,308.68/390,523.17 = 110,553.87/x
  3. Step 3: Cross multiply
    260,308.68x = 390,523.17 × 110,553.87
  4. Step 4: Simplify right side
    260,308.68x = 43,173,847,768.17
  5. Step 5: Solve for x
    x = 43,173,847,768.17/260,308.68
  6. Step 6: Final answer
    x = 165,856.35

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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.