Home / 442,905.90-664,272.45-143,313.90

Finding the Fourth Proportional to 442,905.90, 664,272.45 and 143,313.90

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Solution

The fourth proportional to 442,905.90, 664,272.45 and 143,313.90 is: 214,942.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,905.90 : 664,272.45 = 143,313.90 : x
  2. Step 2: Convert to fraction form
    442,905.90/664,272.45 = 143,313.90/x
  3. Step 3: Cross multiply
    442,905.90x = 664,272.45 × 143,313.90
  4. Step 4: Simplify right side
    442,905.90x = 95,199,475,472.06
  5. Step 5: Solve for x
    x = 95,199,475,472.06/442,905.90
  6. Step 6: Final answer
    x = 214,942.89

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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.