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Finding the Fourth Proportional to 265,146.57, 397,633.46 and 87,620.49

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Solution

The fourth proportional to 265,146.57, 397,633.46 and 87,620.49 is: 131,402.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,146.57 : 397,633.46 = 87,620.49 : x
  2. Step 2: Convert to fraction form
    265,146.57/397,633.46 = 87,620.49/x
  3. Step 3: Cross multiply
    265,146.57x = 397,633.46 × 87,620.49
  4. Step 4: Simplify right side
    265,146.57x = 34,840,838,167.49
  5. Step 5: Solve for x
    x = 34,840,838,167.49/265,146.57
  6. Step 6: Final answer
    x = 131,402.18

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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.