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Finding the Fourth Proportional to 265,364.20, 398,046.30 and 87,898.60

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Solution

The fourth proportional to 265,364.20, 398,046.30 and 87,898.60 is: 131,847.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,364.20 : 398,046.30 = 87,898.60 : x
  2. Step 2: Convert to fraction form
    265,364.20/398,046.30 = 87,898.60/x
  3. Step 3: Cross multiply
    265,364.20x = 398,046.30 × 87,898.60
  4. Step 4: Simplify right side
    265,364.20x = 34,987,712,505.18
  5. Step 5: Solve for x
    x = 34,987,712,505.18/265,364.20
  6. Step 6: Final answer
    x = 131,847.90

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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.