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Finding the Fourth Proportional to 293,200.20, 439,668.90 and 115,615.80

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Solution

The fourth proportional to 293,200.20, 439,668.90 and 115,615.80 is: 173,371.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,200.20 : 439,668.90 = 115,615.80 : x
  2. Step 2: Convert to fraction form
    293,200.20/439,668.90 = 115,615.80/x
  3. Step 3: Cross multiply
    293,200.20x = 439,668.90 × 115,615.80
  4. Step 4: Simplify right side
    293,200.20x = 50,832,671,608.62
  5. Step 5: Solve for x
    x = 50,832,671,608.62/293,200.20
  6. Step 6: Final answer
    x = 173,371.89

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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.