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Finding the Fourth Proportional to 363,289.38, 545,007 and 126,568.50

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Solution

The fourth proportional to 363,289.38, 545,007 and 126,568.50 is: 189,878.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,289.38 : 545,007 = 126,568.50 : x
  2. Step 2: Convert to fraction form
    363,289.38/545,007 = 126,568.50/x
  3. Step 3: Cross multiply
    363,289.38x = 545,007 × 126,568.50
  4. Step 4: Simplify right side
    363,289.38x = 68,980,718,479.50
  5. Step 5: Solve for x
    x = 68,980,718,479.50/363,289.38
  6. Step 6: Final answer
    x = 189,878.16

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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.