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Finding the Fourth Proportional to 265,516.48, 398,110.92 and 130,408.72

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Solution

The fourth proportional to 265,516.48, 398,110.92 and 130,408.72 is: 195,532.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,516.48 : 398,110.92 = 130,408.72 : x
  2. Step 2: Convert to fraction form
    265,516.48/398,110.92 = 130,408.72/x
  3. Step 3: Cross multiply
    265,516.48x = 398,110.92 × 130,408.72
  4. Step 4: Simplify right side
    265,516.48x = 51,917,135,495.22
  5. Step 5: Solve for x
    x = 51,917,135,495.22/265,516.48
  6. Step 6: Final answer
    x = 195,532.63

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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.