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Finding the Fourth Proportional to 426,736.83, 640,200.58 and 160,499.65

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Solution

The fourth proportional to 426,736.83, 640,200.58 and 160,499.65 is: 240,785.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,736.83 : 640,200.58 = 160,499.65 : x
  2. Step 2: Convert to fraction form
    426,736.83/640,200.58 = 160,499.65/x
  3. Step 3: Cross multiply
    426,736.83x = 640,200.58 × 160,499.65
  4. Step 4: Simplify right side
    426,736.83x = 102,751,969,421.05
  5. Step 5: Solve for x
    x = 102,751,969,421.05/426,736.83
  6. Step 6: Final answer
    x = 240,785.33

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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.