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Finding the Fourth Proportional to 404,861.20, 607,464.60 and 194,390.80

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Solution

The fourth proportional to 404,861.20, 607,464.60 and 194,390.80 is: 291,669.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,861.20 : 607,464.60 = 194,390.80 : x
  2. Step 2: Convert to fraction form
    404,861.20/607,464.60 = 194,390.80/x
  3. Step 3: Cross multiply
    404,861.20x = 607,464.60 × 194,390.80
  4. Step 4: Simplify right side
    404,861.20x = 118,085,529,565.68
  5. Step 5: Solve for x
    x = 118,085,529,565.68/404,861.20
  6. Step 6: Final answer
    x = 291,669.17

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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.