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Finding the Fourth Proportional to 383,357.48, 528,517.14 and 268,481.48

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Solution

The fourth proportional to 383,357.48, 528,517.14 and 268,481.48 is: 370,142.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,357.48 : 528,517.14 = 268,481.48 : x
  2. Step 2: Convert to fraction form
    383,357.48/528,517.14 = 268,481.48/x
  3. Step 3: Cross multiply
    383,357.48x = 528,517.14 × 268,481.48
  4. Step 4: Simplify right side
    383,357.48x = 141,897,063,952.57
  5. Step 5: Solve for x
    x = 141,897,063,952.57/383,357.48
  6. Step 6: Final answer
    x = 370,142.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.