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Finding the Fourth Proportional to 265,121.91, 397,631.53 and 103,015.67

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Solution

The fourth proportional to 265,121.91, 397,631.53 and 103,015.67 is: 154,503.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,121.91 : 397,631.53 = 103,015.67 : x
  2. Step 2: Convert to fraction form
    265,121.91/397,631.53 = 103,015.67/x
  3. Step 3: Cross multiply
    265,121.91x = 397,631.53 × 103,015.67
  4. Step 4: Simplify right side
    265,121.91x = 40,962,279,212.61
  5. Step 5: Solve for x
    x = 40,962,279,212.61/265,121.91
  6. Step 6: Final answer
    x = 154,503.56

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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.