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Finding the Fourth Proportional to 311,267.98, 429,561.27 and 173,459.29

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Solution

The fourth proportional to 311,267.98, 429,561.27 and 173,459.29 is: 239,380.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,267.98 : 429,561.27 = 173,459.29 : x
  2. Step 2: Convert to fraction form
    311,267.98/429,561.27 = 173,459.29/x
  3. Step 3: Cross multiply
    311,267.98x = 429,561.27 × 173,459.29
  4. Step 4: Simplify right side
    311,267.98x = 74,511,392,905.70
  5. Step 5: Solve for x
    x = 74,511,392,905.70/311,267.98
  6. Step 6: Final answer
    x = 239,380.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.