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Finding the Fourth Proportional to 265,447.05, 398,165.72 and 65,767.88

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Solution

The fourth proportional to 265,447.05, 398,165.72 and 65,767.88 is: 98,650.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,447.05 : 398,165.72 = 65,767.88 : x
  2. Step 2: Convert to fraction form
    265,447.05/398,165.72 = 65,767.88/x
  3. Step 3: Cross multiply
    265,447.05x = 398,165.72 × 65,767.88
  4. Step 4: Simplify right side
    265,447.05x = 26,186,512,973.41
  5. Step 5: Solve for x
    x = 26,186,512,973.41/265,447.05
  6. Step 6: Final answer
    x = 98,650.61

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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.