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Finding the Fourth Proportional to 303,686.80, 455,940.60 and 177,456.40

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Solution

The fourth proportional to 303,686.80, 455,940.60 and 177,456.40 is: 266,424.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,686.80 : 455,940.60 = 177,456.40 : x
  2. Step 2: Convert to fraction form
    303,686.80/455,940.60 = 177,456.40/x
  3. Step 3: Cross multiply
    303,686.80x = 455,940.60 × 177,456.40
  4. Step 4: Simplify right side
    303,686.80x = 80,909,577,489.84
  5. Step 5: Solve for x
    x = 80,909,577,489.84/303,686.80
  6. Step 6: Final answer
    x = 266,424.41

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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.