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Finding the Fourth Proportional to 260,110.72, 390,137.72 and 176,408.56

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Solution

The fourth proportional to 260,110.72, 390,137.72 and 176,408.56 is: 264,593.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,110.72 : 390,137.72 = 176,408.56 : x
  2. Step 2: Convert to fraction form
    260,110.72/390,137.72 = 176,408.56/x
  3. Step 3: Cross multiply
    260,110.72x = 390,137.72 × 176,408.56
  4. Step 4: Simplify right side
    260,110.72x = 68,823,633,386.88
  5. Step 5: Solve for x
    x = 68,823,633,386.88/260,110.72
  6. Step 6: Final answer
    x = 264,593.61

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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.