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Finding the Fourth Proportional to 235,388, 353,240.76 and 87,644

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Solution

The fourth proportional to 235,388, 353,240.76 and 87,644 is: 131,525.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,388 : 353,240.76 = 87,644 : x
  2. Step 2: Convert to fraction form
    235,388/353,240.76 = 87,644/x
  3. Step 3: Cross multiply
    235,388x = 353,240.76 × 87,644
  4. Step 4: Simplify right side
    235,388x = 30,959,433,169.44
  5. Step 5: Solve for x
    x = 30,959,433,169.44/235,388
  6. Step 6: Final answer
    x = 131,525.11

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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.