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Finding the Fourth Proportional to 401,103.44, 601,663.80 and 134,872.40

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Solution

The fourth proportional to 401,103.44, 601,663.80 and 134,872.40 is: 202,311.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,103.44 : 601,663.80 = 134,872.40 : x
  2. Step 2: Convert to fraction form
    401,103.44/601,663.80 = 134,872.40/x
  3. Step 3: Cross multiply
    401,103.44x = 601,663.80 × 134,872.40
  4. Step 4: Simplify right side
    401,103.44x = 81,147,840,699.12
  5. Step 5: Solve for x
    x = 81,147,840,699.12/401,103.44
  6. Step 6: Final answer
    x = 202,311.51

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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.