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Finding the Fourth Proportional to 401,056.85, 601,563.13 and 134,789.87

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Solution

The fourth proportional to 401,056.85, 601,563.13 and 134,789.87 is: 202,177.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,056.85 : 601,563.13 = 134,789.87 : x
  2. Step 2: Convert to fraction form
    401,056.85/601,563.13 = 134,789.87/x
  3. Step 3: Cross multiply
    401,056.85x = 601,563.13 × 134,789.87
  4. Step 4: Simplify right side
    401,056.85x = 81,084,616,089.49
  5. Step 5: Solve for x
    x = 81,084,616,089.49/401,056.85
  6. Step 6: Final answer
    x = 202,177.36

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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.