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Finding the Fourth Proportional to 442,846.28, 664,374.83 and 143,326.87

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Solution

The fourth proportional to 442,846.28, 664,374.83 and 143,326.87 is: 215,024.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,846.28 : 664,374.83 = 143,326.87 : x
  2. Step 2: Convert to fraction form
    442,846.28/664,374.83 = 143,326.87/x
  3. Step 3: Cross multiply
    442,846.28x = 664,374.83 × 143,326.87
  4. Step 4: Simplify right side
    442,846.28x = 95,222,760,852.17
  5. Step 5: Solve for x
    x = 95,222,760,852.17/442,846.28
  6. Step 6: Final answer
    x = 215,024.41

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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.