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Finding the Fourth Proportional to 268,671.33, 402,992.42 and 81,668.25

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Solution

The fourth proportional to 268,671.33, 402,992.42 and 81,668.25 is: 122,497.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,671.33 : 402,992.42 = 81,668.25 : x
  2. Step 2: Convert to fraction form
    268,671.33/402,992.42 = 81,668.25/x
  3. Step 3: Cross multiply
    268,671.33x = 402,992.42 × 81,668.25
  4. Step 4: Simplify right side
    268,671.33x = 32,911,685,296.32
  5. Step 5: Solve for x
    x = 32,911,685,296.32/268,671.33
  6. Step 6: Final answer
    x = 122,497.94

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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.