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Finding the Fourth Proportional to 303,816.00, 455,427.80 and 121,392.43

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Solution

The fourth proportional to 303,816.00, 455,427.80 and 121,392.43 is: 181,970.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,816.00 : 455,427.80 = 121,392.43 : x
  2. Step 2: Convert to fraction form
    303,816.00/455,427.80 = 121,392.43/x
  3. Step 3: Cross multiply
    303,816.00x = 455,427.80 × 121,392.43
  4. Step 4: Simplify right side
    303,816.00x = 55,285,486,724.59
  5. Step 5: Solve for x
    x = 55,285,486,724.59/303,816.00
  6. Step 6: Final answer
    x = 181,970.30

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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.