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Finding the Fourth Proportional to 268,221.40, 402,591.30 and 163,245.40

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Solution

The fourth proportional to 268,221.40, 402,591.30 and 163,245.40 is: 245,025.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,221.40 : 402,591.30 = 163,245.40 : x
  2. Step 2: Convert to fraction form
    268,221.40/402,591.30 = 163,245.40/x
  3. Step 3: Cross multiply
    268,221.40x = 402,591.30 × 163,245.40
  4. Step 4: Simplify right side
    268,221.40x = 65,721,177,805.02
  5. Step 5: Solve for x
    x = 65,721,177,805.02/268,221.40
  6. Step 6: Final answer
    x = 245,025.85

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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.