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Finding the Fourth Proportional to 271,439.01, 407,019.36 and 143,424.03

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Solution

The fourth proportional to 271,439.01, 407,019.36 and 143,424.03 is: 215,062.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,439.01 : 407,019.36 = 143,424.03 : x
  2. Step 2: Convert to fraction form
    271,439.01/407,019.36 = 143,424.03/x
  3. Step 3: Cross multiply
    271,439.01x = 407,019.36 × 143,424.03
  4. Step 4: Simplify right side
    271,439.01x = 58,376,356,899.22
  5. Step 5: Solve for x
    x = 58,376,356,899.22/271,439.01
  6. Step 6: Final answer
    x = 215,062.52

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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.