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Finding the Fourth Proportional to 408,074.13, 612,156.75 and 108,566.28

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Solution

The fourth proportional to 408,074.13, 612,156.75 and 108,566.28 is: 162,861.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,074.13 : 612,156.75 = 108,566.28 : x
  2. Step 2: Convert to fraction form
    408,074.13/612,156.75 = 108,566.28/x
  3. Step 3: Cross multiply
    408,074.13x = 612,156.75 × 108,566.28
  4. Step 4: Simplify right side
    408,074.13x = 66,459,581,124.39
  5. Step 5: Solve for x
    x = 66,459,581,124.39/408,074.13
  6. Step 6: Final answer
    x = 162,861.54

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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.