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Finding the Fourth Proportional to 311,022.52, 429,417.66 and 239,275.96

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Solution

The fourth proportional to 311,022.52, 429,417.66 and 239,275.96 is: 330,359.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,022.52 : 429,417.66 = 239,275.96 : x
  2. Step 2: Convert to fraction form
    311,022.52/429,417.66 = 239,275.96/x
  3. Step 3: Cross multiply
    311,022.52x = 429,417.66 × 239,275.96
  4. Step 4: Simplify right side
    311,022.52x = 102,749,322,837.45
  5. Step 5: Solve for x
    x = 102,749,322,837.45/311,022.52
  6. Step 6: Final answer
    x = 330,359.75

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