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Finding the Fourth Proportional to 407,961.20, 612,071.40 and 183,234.80

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Solution

The fourth proportional to 407,961.20, 612,071.40 and 183,234.80 is: 274,910.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,961.20 : 612,071.40 = 183,234.80 : x
  2. Step 2: Convert to fraction form
    407,961.20/612,071.40 = 183,234.80/x
  3. Step 3: Cross multiply
    407,961.20x = 612,071.40 × 183,234.80
  4. Step 4: Simplify right side
    407,961.20x = 112,152,780,564.72
  5. Step 5: Solve for x
    x = 112,152,780,564.72/407,961.20
  6. Step 6: Final answer
    x = 274,910.41

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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.