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Finding the Fourth Proportional to 422,403.20, 633,604.80 and 222,646.40

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Solution

The fourth proportional to 422,403.20, 633,604.80 and 222,646.40 is: 333,969.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,403.20 : 633,604.80 = 222,646.40 : x
  2. Step 2: Convert to fraction form
    422,403.20/633,604.80 = 222,646.40/x
  3. Step 3: Cross multiply
    422,403.20x = 633,604.80 × 222,646.40
  4. Step 4: Simplify right side
    422,403.20x = 141,069,827,742.72
  5. Step 5: Solve for x
    x = 141,069,827,742.72/422,403.20
  6. Step 6: Final answer
    x = 333,969.60

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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.