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Finding the Fourth Proportional to 235,279, 352,762.46 and 85,501.50

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Solution

The fourth proportional to 235,279, 352,762.46 and 85,501.50 is: 128,195.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,279 : 352,762.46 = 85,501.50 : x
  2. Step 2: Convert to fraction form
    235,279/352,762.46 = 85,501.50/x
  3. Step 3: Cross multiply
    235,279x = 352,762.46 × 85,501.50
  4. Step 4: Simplify right side
    235,279x = 30,161,719,473.69
  5. Step 5: Solve for x
    x = 30,161,719,473.69/235,279
  6. Step 6: Final answer
    x = 128,195.54

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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.