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Finding the Fourth Proportional to 291,990.88, 402,739.96 and 189,827.92

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Solution

The fourth proportional to 291,990.88, 402,739.96 and 189,827.92 is: 261,827.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,990.88 : 402,739.96 = 189,827.92 : x
  2. Step 2: Convert to fraction form
    291,990.88/402,739.96 = 189,827.92/x
  3. Step 3: Cross multiply
    291,990.88x = 402,739.96 × 189,827.92
  4. Step 4: Simplify right side
    291,990.88x = 76,451,288,907.68
  5. Step 5: Solve for x
    x = 76,451,288,907.68/291,990.88
  6. Step 6: Final answer
    x = 261,827.66

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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.