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Finding the Fourth Proportional to 311,999.85, 467,712.72 and 169,637.08

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Solution

The fourth proportional to 311,999.85, 467,712.72 and 169,637.08 is: 254,299.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,999.85 : 467,712.72 = 169,637.08 : x
  2. Step 2: Convert to fraction form
    311,999.85/467,712.72 = 169,637.08/x
  3. Step 3: Cross multiply
    311,999.85x = 467,712.72 × 169,637.08
  4. Step 4: Simplify right side
    311,999.85x = 79,341,420,099.66
  5. Step 5: Solve for x
    x = 79,341,420,099.66/311,999.85
  6. Step 6: Final answer
    x = 254,299.55

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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.