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Finding the Fourth Proportional to 354,184.17, 531,135.31 and 129,493.41

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Solution

The fourth proportional to 354,184.17, 531,135.31 and 129,493.41 is: 194,188.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,184.17 : 531,135.31 = 129,493.41 : x
  2. Step 2: Convert to fraction form
    354,184.17/531,135.31 = 129,493.41/x
  3. Step 3: Cross multiply
    354,184.17x = 531,135.31 × 129,493.41
  4. Step 4: Simplify right side
    354,184.17x = 68,778,519,160.16
  5. Step 5: Solve for x
    x = 68,778,519,160.16/354,184.17
  6. Step 6: Final answer
    x = 194,188.58

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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.