Home / 442,936.90-664,502.55-143,431.30

Finding the Fourth Proportional to 442,936.90, 664,502.55 and 143,431.30

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Solution

The fourth proportional to 442,936.90, 664,502.55 and 143,431.30 is: 215,178.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,936.90 : 664,502.55 = 143,431.30 : x
  2. Step 2: Convert to fraction form
    442,936.90/664,502.55 = 143,431.30/x
  3. Step 3: Cross multiply
    442,936.90x = 664,502.55 × 143,431.30
  4. Step 4: Simplify right side
    442,936.90x = 95,310,464,599.82
  5. Step 5: Solve for x
    x = 95,310,464,599.82/442,936.90
  6. Step 6: Final answer
    x = 215,178.43

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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.