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Finding the Fourth Proportional to 406,875.20, 610,485.60 and 196,404.80

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Solution

The fourth proportional to 406,875.20, 610,485.60 and 196,404.80 is: 294,690.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,875.20 : 610,485.60 = 196,404.80 : x
  2. Step 2: Convert to fraction form
    406,875.20/610,485.60 = 196,404.80/x
  3. Step 3: Cross multiply
    406,875.20x = 610,485.60 × 196,404.80
  4. Step 4: Simplify right side
    406,875.20x = 119,902,302,170.88
  5. Step 5: Solve for x
    x = 119,902,302,170.88/406,875.20
  6. Step 6: Final answer
    x = 294,690.61

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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.