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Finding the Fourth Proportional to 265,818.33, 398,804.67 and 85,899.96

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Solution

The fourth proportional to 265,818.33, 398,804.67 and 85,899.96 is: 128,874.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,818.33 : 398,804.67 = 85,899.96 : x
  2. Step 2: Convert to fraction form
    265,818.33/398,804.67 = 85,899.96/x
  3. Step 3: Cross multiply
    265,818.33x = 398,804.67 × 85,899.96
  4. Step 4: Simplify right side
    265,818.33x = 34,257,305,200.81
  5. Step 5: Solve for x
    x = 34,257,305,200.81/265,818.33
  6. Step 6: Final answer
    x = 128,874.88

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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.