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Finding the Fourth Proportional to 265,156.74, 397,650.51 and 87,630.66

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Solution

The fourth proportional to 265,156.74, 397,650.51 and 87,630.66 is: 131,418.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,156.74 : 397,650.51 = 87,630.66 : x
  2. Step 2: Convert to fraction form
    265,156.74/397,650.51 = 87,630.66/x
  3. Step 3: Cross multiply
    265,156.74x = 397,650.51 × 87,630.66
  4. Step 4: Simplify right side
    265,156.74x = 34,846,376,640.64
  5. Step 5: Solve for x
    x = 34,846,376,640.64/265,156.74
  6. Step 6: Final answer
    x = 131,418.03

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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.