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Finding the Fourth Proportional to 291,990.64, 402,956.76 and 169,473.85

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Solution

The fourth proportional to 291,990.64, 402,956.76 and 169,473.85 is: 233,879.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,990.64 : 402,956.76 = 169,473.85 : x
  2. Step 2: Convert to fraction form
    291,990.64/402,956.76 = 169,473.85/x
  3. Step 3: Cross multiply
    291,990.64x = 402,956.76 × 169,473.85
  4. Step 4: Simplify right side
    291,990.64x = 68,290,633,500.73
  5. Step 5: Solve for x
    x = 68,290,633,500.73/291,990.64
  6. Step 6: Final answer
    x = 233,879.53

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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.