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Finding the Fourth Proportional to 265,128.39, 397,754.85 and 87,635.40

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Solution

The fourth proportional to 265,128.39, 397,754.85 and 87,635.40 is: 131,473.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,128.39 : 397,754.85 = 87,635.40 : x
  2. Step 2: Convert to fraction form
    265,128.39/397,754.85 = 87,635.40/x
  3. Step 3: Cross multiply
    265,128.39x = 397,754.85 × 87,635.40
  4. Step 4: Simplify right side
    265,128.39x = 34,857,403,392.92
  5. Step 5: Solve for x
    x = 34,857,403,392.92/265,128.39
  6. Step 6: Final answer
    x = 131,473.67

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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.