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Finding the Fourth Proportional to 418,770.18, 628,158.96 and 119,250.54

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Solution

The fourth proportional to 418,770.18, 628,158.96 and 119,250.54 is: 178,876.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,770.18 : 628,158.96 = 119,250.54 : x
  2. Step 2: Convert to fraction form
    418,770.18/628,158.96 = 119,250.54/x
  3. Step 3: Cross multiply
    418,770.18x = 628,158.96 × 119,250.54
  4. Step 4: Simplify right side
    418,770.18x = 74,908,295,185.84
  5. Step 5: Solve for x
    x = 74,908,295,185.84/418,770.18
  6. Step 6: Final answer
    x = 178,876.86

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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.