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Finding the Fourth Proportional to 363,911.10, 545,866.65 and 325,419.90

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Solution

The fourth proportional to 363,911.10, 545,866.65 and 325,419.90 is: 488,129.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,911.10 : 545,866.65 = 325,419.90 : x
  2. Step 2: Convert to fraction form
    363,911.10/545,866.65 = 325,419.90/x
  3. Step 3: Cross multiply
    363,911.10x = 545,866.65 × 325,419.90
  4. Step 4: Simplify right side
    363,911.10x = 177,635,870,656.34
  5. Step 5: Solve for x
    x = 177,635,870,656.34/363,911.10
  6. Step 6: Final answer
    x = 488,129.85

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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.