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Finding the Fourth Proportional to 325,047.01, 487,591.91 and 85,166.78

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Solution

The fourth proportional to 325,047.01, 487,591.91 and 85,166.78 is: 127,755.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,047.01 : 487,591.91 = 85,166.78 : x
  2. Step 2: Convert to fraction form
    325,047.01/487,591.91 = 85,166.78/x
  3. Step 3: Cross multiply
    325,047.01x = 487,591.91 × 85,166.78
  4. Step 4: Simplify right side
    325,047.01x = 41,526,634,737.92
  5. Step 5: Solve for x
    x = 41,526,634,737.92/325,047.01
  6. Step 6: Final answer
    x = 127,755.78

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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.