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Finding the Fourth Proportional to 400,979.63, 601,524.73 and 134,760.78

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Solution

The fourth proportional to 400,979.63, 601,524.73 and 134,760.78 is: 202,159.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,979.63 : 601,524.73 = 134,760.78 : x
  2. Step 2: Convert to fraction form
    400,979.63/601,524.73 = 134,760.78/x
  3. Step 3: Cross multiply
    400,979.63x = 601,524.73 × 134,760.78
  4. Step 4: Simplify right side
    400,979.63x = 81,061,941,804.09
  5. Step 5: Solve for x
    x = 81,061,941,804.09/400,979.63
  6. Step 6: Final answer
    x = 202,159.75

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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.