Home / 442,962.40-664,006.20-218,138.80

Finding the Fourth Proportional to 442,962.40, 664,006.20 and 218,138.80

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Solution

The fourth proportional to 442,962.40, 664,006.20 and 218,138.80 is: 326,992.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,962.40 : 664,006.20 = 218,138.80 : x
  2. Step 2: Convert to fraction form
    442,962.40/664,006.20 = 218,138.80/x
  3. Step 3: Cross multiply
    442,962.40x = 664,006.20 × 218,138.80
  4. Step 4: Simplify right side
    442,962.40x = 144,845,515,660.56
  5. Step 5: Solve for x
    x = 144,845,515,660.56/442,962.40
  6. Step 6: Final answer
    x = 326,992.80

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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.