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Finding the Fourth Proportional to 450,978.68, 676,564.97 and 131,136.11

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Solution

The fourth proportional to 450,978.68, 676,564.97 and 131,136.11 is: 196,732.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,978.68 : 676,564.97 = 131,136.11 : x
  2. Step 2: Convert to fraction form
    450,978.68/676,564.97 = 131,136.11/x
  3. Step 3: Cross multiply
    450,978.68x = 676,564.97 × 131,136.11
  4. Step 4: Simplify right side
    450,978.68x = 88,722,094,289.56
  5. Step 5: Solve for x
    x = 88,722,094,289.56/450,978.68
  6. Step 6: Final answer
    x = 196,732.35

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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.