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Finding the Fourth Proportional to 363,769.20, 545,653.80 and 325,715.40

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Solution

The fourth proportional to 363,769.20, 545,653.80 and 325,715.40 is: 488,573.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,769.20 : 545,653.80 = 325,715.40 : x
  2. Step 2: Convert to fraction form
    363,769.20/545,653.80 = 325,715.40/x
  3. Step 3: Cross multiply
    363,769.20x = 545,653.80 × 325,715.40
  4. Step 4: Simplify right side
    363,769.20x = 177,727,845,728.52
  5. Step 5: Solve for x
    x = 177,727,845,728.52/363,769.20
  6. Step 6: Final answer
    x = 488,573.10

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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.