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Finding the Fourth Proportional to 297,813.60, 446,720.40 and 129,414.60

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Solution

The fourth proportional to 297,813.60, 446,720.40 and 129,414.60 is: 194,121.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,813.60 : 446,720.40 = 129,414.60 : x
  2. Step 2: Convert to fraction form
    297,813.60/446,720.40 = 129,414.60/x
  3. Step 3: Cross multiply
    297,813.60x = 446,720.40 × 129,414.60
  4. Step 4: Simplify right side
    297,813.60x = 57,812,141,877.84
  5. Step 5: Solve for x
    x = 57,812,141,877.84/297,813.60
  6. Step 6: Final answer
    x = 194,121.90

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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.