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Finding the Fourth Proportional to 521,728.80, 782,884.80 and 222,158.40

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Solution

The fourth proportional to 521,728.80, 782,884.80 and 222,158.40 is: 333,361.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,728.80 : 782,884.80 = 222,158.40 : x
  2. Step 2: Convert to fraction form
    521,728.80/782,884.80 = 222,158.40/x
  3. Step 3: Cross multiply
    521,728.80x = 782,884.80 × 222,158.40
  4. Step 4: Simplify right side
    521,728.80x = 173,924,434,552.32
  5. Step 5: Solve for x
    x = 173,924,434,552.32/521,728.80
  6. Step 6: Final answer
    x = 333,361.77

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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.