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Finding the Fourth Proportional to 265,128.89, 397,755.63 and 87,635.92

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Solution

The fourth proportional to 265,128.89, 397,755.63 and 87,635.92 is: 131,474.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,128.89 : 397,755.63 = 87,635.92 : x
  2. Step 2: Convert to fraction form
    265,128.89/397,755.63 = 87,635.92/x
  3. Step 3: Cross multiply
    265,128.89x = 397,755.63 × 87,635.92
  4. Step 4: Simplify right side
    265,128.89x = 34,857,678,581.45
  5. Step 5: Solve for x
    x = 34,857,678,581.45/265,128.89
  6. Step 6: Final answer
    x = 131,474.46

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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.