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Finding the Fourth Proportional to 275,120.86, 412,740.68 and 85,577.62

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Solution

The fourth proportional to 275,120.86, 412,740.68 and 85,577.62 is: 128,384.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,120.86 : 412,740.68 = 85,577.62 : x
  2. Step 2: Convert to fraction form
    275,120.86/412,740.68 = 85,577.62/x
  3. Step 3: Cross multiply
    275,120.86x = 412,740.68 × 85,577.62
  4. Step 4: Simplify right side
    275,120.86x = 35,321,365,071.58
  5. Step 5: Solve for x
    x = 35,321,365,071.58/275,120.86
  6. Step 6: Final answer
    x = 128,384.90

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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.