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Finding the Fourth Proportional to 268,220.34, 402,330.81 and 68,540.90

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Solution

The fourth proportional to 268,220.34, 402,330.81 and 68,540.90 is: 102,811.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,220.34 : 402,330.81 = 68,540.90 : x
  2. Step 2: Convert to fraction form
    268,220.34/402,330.81 = 68,540.90/x
  3. Step 3: Cross multiply
    268,220.34x = 402,330.81 × 68,540.90
  4. Step 4: Simplify right side
    268,220.34x = 27,576,113,803.48
  5. Step 5: Solve for x
    x = 27,576,113,803.48/268,220.34
  6. Step 6: Final answer
    x = 102,811.42

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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.