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Finding the Fourth Proportional to 265,504.15, 398,108.62 and 87,914.28

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Solution

The fourth proportional to 265,504.15, 398,108.62 and 87,914.28 is: 131,822.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,504.15 : 398,108.62 = 87,914.28 : x
  2. Step 2: Convert to fraction form
    265,504.15/398,108.62 = 87,914.28/x
  3. Step 3: Cross multiply
    265,504.15x = 398,108.62 × 87,914.28
  4. Step 4: Simplify right side
    265,504.15x = 34,999,432,689.09
  5. Step 5: Solve for x
    x = 34,999,432,689.09/265,504.15
  6. Step 6: Final answer
    x = 131,822.54

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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.