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Finding the Fourth Proportional to 401,015.44, 601,507.80 and 134,939.28

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Solution

The fourth proportional to 401,015.44, 601,507.80 and 134,939.28 is: 202,403.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,015.44 : 601,507.80 = 134,939.28 : x
  2. Step 2: Convert to fraction form
    401,015.44/601,507.80 = 134,939.28/x
  3. Step 3: Cross multiply
    401,015.44x = 601,507.80 × 134,939.28
  4. Step 4: Simplify right side
    401,015.44x = 81,167,029,446.38
  5. Step 5: Solve for x
    x = 81,167,029,446.38/401,015.44
  6. Step 6: Final answer
    x = 202,403.75

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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.