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Finding the Fourth Proportional to 365,999.40, 548,999.10 and 259,711.20

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Solution

The fourth proportional to 365,999.40, 548,999.10 and 259,711.20 is: 389,566.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,999.40 : 548,999.10 = 259,711.20 : x
  2. Step 2: Convert to fraction form
    365,999.40/548,999.10 = 259,711.20/x
  3. Step 3: Cross multiply
    365,999.40x = 548,999.10 × 259,711.20
  4. Step 4: Simplify right side
    365,999.40x = 142,581,215,059.92
  5. Step 5: Solve for x
    x = 142,581,215,059.92/365,999.40
  6. Step 6: Final answer
    x = 389,566.80

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Similar ratio
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1.5x scale

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.