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Finding the Fourth Proportional to 235,280.66, 352,891.82 and 139,275

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Solution

The fourth proportional to 235,280.66, 352,891.82 and 139,275 is: 208,895.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,280.66 : 352,891.82 = 139,275 : x
  2. Step 2: Convert to fraction form
    235,280.66/352,891.82 = 139,275/x
  3. Step 3: Cross multiply
    235,280.66x = 352,891.82 × 139,275
  4. Step 4: Simplify right side
    235,280.66x = 49,149,008,578.69
  5. Step 5: Solve for x
    x = 49,149,008,578.69/235,280.66
  6. Step 6: Final answer
    x = 208,895.24

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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.