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Finding the Fourth Proportional to 268,829.60, 403,244.40 and 81,816.80

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Solution

The fourth proportional to 268,829.60, 403,244.40 and 81,816.80 is: 122,725.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,829.60 : 403,244.40 = 81,816.80 : x
  2. Step 2: Convert to fraction form
    268,829.60/403,244.40 = 81,816.80/x
  3. Step 3: Cross multiply
    268,829.60x = 403,244.40 × 81,816.80
  4. Step 4: Simplify right side
    268,829.60x = 32,992,166,425.92
  5. Step 5: Solve for x
    x = 32,992,166,425.92/268,829.60
  6. Step 6: Final answer
    x = 122,725.20

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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.