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Finding the Fourth Proportional to 449,824.18, 674,636.64 and 129,906.40

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Solution

The fourth proportional to 449,824.18, 674,636.64 and 129,906.40 is: 194,830.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,824.18 : 674,636.64 = 129,906.40 : x
  2. Step 2: Convert to fraction form
    449,824.18/674,636.64 = 129,906.40/x
  3. Step 3: Cross multiply
    449,824.18x = 674,636.64 × 129,906.40
  4. Step 4: Simplify right side
    449,824.18x = 87,639,617,210.50
  5. Step 5: Solve for x
    x = 87,639,617,210.50/449,824.18
  6. Step 6: Final answer
    x = 194,830.83

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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.