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Finding the Fourth Proportional to 409,847.80, 614,115.60 and 259,819.60

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Solution

The fourth proportional to 409,847.80, 614,115.60 and 259,819.60 is: 389,313.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,847.80 : 614,115.60 = 259,819.60 : x
  2. Step 2: Convert to fraction form
    409,847.80/614,115.60 = 259,819.60/x
  3. Step 3: Cross multiply
    409,847.80x = 614,115.60 × 259,819.60
  4. Step 4: Simplify right side
    409,847.80x = 159,559,269,545.76
  5. Step 5: Solve for x
    x = 159,559,269,545.76/409,847.80
  6. Step 6: Final answer
    x = 389,313.47

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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.