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Finding the Fourth Proportional to 303,816.51, 455,428.56 and 121,392.93

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Solution

The fourth proportional to 303,816.51, 455,428.56 and 121,392.93 is: 181,971.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,816.51 : 455,428.56 = 121,392.93 : x
  2. Step 2: Convert to fraction form
    303,816.51/455,428.56 = 121,392.93/x
  3. Step 3: Cross multiply
    303,816.51x = 455,428.56 × 121,392.93
  4. Step 4: Simplify right side
    303,816.51x = 55,285,807,304.08
  5. Step 5: Solve for x
    x = 55,285,807,304.08/303,816.51
  6. Step 6: Final answer
    x = 181,971.04

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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.