Home / 442,615.80-664,139.70-205,836.60

Finding the Fourth Proportional to 442,615.80, 664,139.70 and 205,836.60

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Solution

The fourth proportional to 442,615.80, 664,139.70 and 205,836.60 is: 308,855.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,615.80 : 664,139.70 = 205,836.60 : x
  2. Step 2: Convert to fraction form
    442,615.80/664,139.70 = 205,836.60/x
  3. Step 3: Cross multiply
    442,615.80x = 664,139.70 × 205,836.60
  4. Step 4: Simplify right side
    442,615.80x = 136,704,257,773.02
  5. Step 5: Solve for x
    x = 136,704,257,773.02/442,615.80
  6. Step 6: Final answer
    x = 308,855.35

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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.