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Finding the Fourth Proportional to 442,984.40, 664,573.80 and 143,478.80

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Solution

The fourth proportional to 442,984.40, 664,573.80 and 143,478.80 is: 215,249.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,984.40 : 664,573.80 = 143,478.80 : x
  2. Step 2: Convert to fraction form
    442,984.40/664,573.80 = 143,478.80/x
  3. Step 3: Cross multiply
    442,984.40x = 664,573.80 × 143,478.80
  4. Step 4: Simplify right side
    442,984.40x = 95,352,251,335.44
  5. Step 5: Solve for x
    x = 95,352,251,335.44/442,984.40
  6. Step 6: Final answer
    x = 215,249.68

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1.5x scale

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.