Home / 442,911.20-664,431.60-143,340.80

Finding the Fourth Proportional to 442,911.20, 664,431.60 and 143,340.80

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Solution

The fourth proportional to 442,911.20, 664,431.60 and 143,340.80 is: 215,032.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,911.20 : 664,431.60 = 143,340.80 : x
  2. Step 2: Convert to fraction form
    442,911.20/664,431.60 = 143,340.80/x
  3. Step 3: Cross multiply
    442,911.20x = 664,431.60 × 143,340.80
  4. Step 4: Simplify right side
    442,911.20x = 95,240,157,089.28
  5. Step 5: Solve for x
    x = 95,240,157,089.28/442,911.20
  6. Step 6: Final answer
    x = 215,032.17

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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.