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Finding the Fourth Proportional to 407,736.69, 611,557.47 and 108,240.54

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Solution

The fourth proportional to 407,736.69, 611,557.47 and 108,240.54 is: 162,348.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,736.69 : 611,557.47 = 108,240.54 : x
  2. Step 2: Convert to fraction form
    407,736.69/611,557.47 = 108,240.54/x
  3. Step 3: Cross multiply
    407,736.69x = 611,557.47 × 108,240.54
  4. Step 4: Simplify right side
    407,736.69x = 66,195,310,793.83
  5. Step 5: Solve for x
    x = 66,195,310,793.83/407,736.69
  6. Step 6: Final answer
    x = 162,348.18

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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.