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Finding the Fourth Proportional to 401,057.85, 601,564.64 and 134,790.87

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Solution

The fourth proportional to 401,057.85, 601,564.64 and 134,790.87 is: 202,178.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,057.85 : 601,564.64 = 134,790.87 : x
  2. Step 2: Convert to fraction form
    401,057.85/601,564.64 = 134,790.87/x
  3. Step 3: Cross multiply
    401,057.85x = 601,564.64 × 134,790.87
  4. Step 4: Simplify right side
    401,057.85x = 81,085,420,512.88
  5. Step 5: Solve for x
    x = 81,085,420,512.88/401,057.85
  6. Step 6: Final answer
    x = 202,178.86

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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.