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Finding the Fourth Proportional to 235,065.90, 352,516.20 and 85,280.70

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Solution

The fourth proportional to 235,065.90, 352,516.20 and 85,280.70 is: 127,891.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,065.90 : 352,516.20 = 85,280.70 : x
  2. Step 2: Convert to fraction form
    235,065.90/352,516.20 = 85,280.70/x
  3. Step 3: Cross multiply
    235,065.90x = 352,516.20 × 85,280.70
  4. Step 4: Simplify right side
    235,065.90x = 30,062,828,297.34
  5. Step 5: Solve for x
    x = 30,062,828,297.34/235,065.90
  6. Step 6: Final answer
    x = 127,891.07

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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.