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Finding the Fourth Proportional to 265,806.01, 398,786.24 and 85,887.67

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Solution

The fourth proportional to 265,806.01, 398,786.24 and 85,887.67 is: 128,856.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,806.01 : 398,786.24 = 85,887.67 : x
  2. Step 2: Convert to fraction form
    265,806.01/398,786.24 = 85,887.67/x
  3. Step 3: Cross multiply
    265,806.01x = 398,786.24 × 85,887.67
  4. Step 4: Simplify right side
    265,806.01x = 34,250,821,694.86
  5. Step 5: Solve for x
    x = 34,250,821,694.86/265,806.01
  6. Step 6: Final answer
    x = 128,856.46

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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.