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Finding the Fourth Proportional to 642,759.20, 963,447.60 and 243,245.60

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Solution

The fourth proportional to 642,759.20, 963,447.60 and 243,245.60 is: 364,606.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,759.20 : 963,447.60 = 243,245.60 : x
  2. Step 2: Convert to fraction form
    642,759.20/963,447.60 = 243,245.60/x
  3. Step 3: Cross multiply
    642,759.20x = 963,447.60 × 243,245.60
  4. Step 4: Simplify right side
    642,759.20x = 234,354,389,530.56
  5. Step 5: Solve for x
    x = 234,354,389,530.56/642,759.20
  6. Step 6: Final answer
    x = 364,606.82

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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.