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Finding the Fourth Proportional to 263,483.40, 395,090.64 and 85,876.32

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Solution

The fourth proportional to 263,483.40, 395,090.64 and 85,876.32 is: 128,770.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,483.40 : 395,090.64 = 85,876.32 : x
  2. Step 2: Convert to fraction form
    263,483.40/395,090.64 = 85,876.32/x
  3. Step 3: Cross multiply
    263,483.40x = 395,090.64 × 85,876.32
  4. Step 4: Simplify right side
    263,483.40x = 33,928,930,229.64
  5. Step 5: Solve for x
    x = 33,928,930,229.64/263,483.40
  6. Step 6: Final answer
    x = 128,770.66

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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.