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Finding the Fourth Proportional to 265,181.47, 397,732.71 and 87,689.41

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Solution

The fourth proportional to 265,181.47, 397,732.71 and 87,689.41 is: 131,521.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,181.47 : 397,732.71 = 87,689.41 : x
  2. Step 2: Convert to fraction form
    265,181.47/397,732.71 = 87,689.41/x
  3. Step 3: Cross multiply
    265,181.47x = 397,732.71 × 87,689.41
  4. Step 4: Simplify right side
    265,181.47x = 34,876,946,677.60
  5. Step 5: Solve for x
    x = 34,876,946,677.60/265,181.47
  6. Step 6: Final answer
    x = 131,521.05

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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.