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Finding the Fourth Proportional to 235,369.71, 352,943.64 and 85,504.32

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Solution

The fourth proportional to 235,369.71, 352,943.64 and 85,504.32 is: 128,216.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,369.71 : 352,943.64 = 85,504.32 : x
  2. Step 2: Convert to fraction form
    235,369.71/352,943.64 = 85,504.32/x
  3. Step 3: Cross multiply
    235,369.71x = 352,943.64 × 85,504.32
  4. Step 4: Simplify right side
    235,369.71x = 30,178,205,936.52
  5. Step 5: Solve for x
    x = 30,178,205,936.52/235,369.71
  6. Step 6: Final answer
    x = 128,216.18

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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.