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Finding the Fourth Proportional to 268,990.20, 403,485.30 and 268,990.20

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Solution

The fourth proportional to 268,990.20, 403,485.30 and 268,990.20 is: 403,485.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,990.20 : 403,485.30 = 268,990.20 : x
  2. Step 2: Convert to fraction form
    268,990.20/403,485.30 = 268,990.20/x
  3. Step 3: Cross multiply
    268,990.20x = 403,485.30 × 268,990.20
  4. Step 4: Simplify right side
    268,990.20x = 108,533,591,544.06
  5. Step 5: Solve for x
    x = 108,533,591,544.06/268,990.20
  6. Step 6: Final answer
    x = 403,485.30

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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.