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Finding the Fourth Proportional to 236,014.61, 353,972.70 and 86,325.39

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Solution

The fourth proportional to 236,014.61, 353,972.70 and 86,325.39 is: 129,470.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,014.61 : 353,972.70 = 86,325.39 : x
  2. Step 2: Convert to fraction form
    236,014.61/353,972.70 = 86,325.39/x
  3. Step 3: Cross multiply
    236,014.61x = 353,972.70 × 86,325.39
  4. Step 4: Simplify right side
    236,014.61x = 30,556,831,376.85
  5. Step 5: Solve for x
    x = 30,556,831,376.85/236,014.61
  6. Step 6: Final answer
    x = 129,470.09

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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.