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Finding the Fourth Proportional to 407,481.80, 611,280.93 and 127,020.92

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Solution

The fourth proportional to 407,481.80, 611,280.93 and 127,020.92 is: 190,549.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,481.80 : 611,280.93 = 127,020.92 : x
  2. Step 2: Convert to fraction form
    407,481.80/611,280.93 = 127,020.92/x
  3. Step 3: Cross multiply
    407,481.80x = 611,280.93 × 127,020.92
  4. Step 4: Simplify right side
    407,481.80x = 77,645,466,107.06
  5. Step 5: Solve for x
    x = 77,645,466,107.06/407,481.80
  6. Step 6: Final answer
    x = 190,549.53

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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.