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Finding the Fourth Proportional to 265,745.60, 398,618.40 and 251,230.40

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Solution

The fourth proportional to 265,745.60, 398,618.40 and 251,230.40 is: 376,845.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,745.60 : 398,618.40 = 251,230.40 : x
  2. Step 2: Convert to fraction form
    265,745.60/398,618.40 = 251,230.40/x
  3. Step 3: Cross multiply
    265,745.60x = 398,618.40 × 251,230.40
  4. Step 4: Simplify right side
    265,745.60x = 100,145,060,079.36
  5. Step 5: Solve for x
    x = 100,145,060,079.36/265,745.60
  6. Step 6: Final answer
    x = 376,845.60

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Similar ratio
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1.5x scale

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.