Home / 442,928.11-664,497.76-143,408.78

Finding the Fourth Proportional to 442,928.11, 664,497.76 and 143,408.78

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Solution

The fourth proportional to 442,928.11, 664,497.76 and 143,408.78 is: 215,147.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,928.11 : 664,497.76 = 143,408.78 : x
  2. Step 2: Convert to fraction form
    442,928.11/664,497.76 = 143,408.78/x
  3. Step 3: Cross multiply
    442,928.11x = 664,497.76 × 143,408.78
  4. Step 4: Simplify right side
    442,928.11x = 95,294,812,154.08
  5. Step 5: Solve for x
    x = 95,294,812,154.08/442,928.11
  6. Step 6: Final answer
    x = 215,147.36

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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.