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Finding the Fourth Proportional to 295,538.68, 407,520.87 and 199,879.30

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Solution

The fourth proportional to 295,538.68, 407,520.87 and 199,879.30 is: 275,615.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    295,538.68 : 407,520.87 = 199,879.30 : x
  2. Step 2: Convert to fraction form
    295,538.68/407,520.87 = 199,879.30/x
  3. Step 3: Cross multiply
    295,538.68x = 407,520.87 × 199,879.30
  4. Step 4: Simplify right side
    295,538.68x = 81,454,984,822.86
  5. Step 5: Solve for x
    x = 81,454,984,822.86/295,538.68
  6. Step 6: Final answer
    x = 275,615.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.