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Finding the Fourth Proportional to 365,999.90, 548,999.85 and 259,711.70

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Solution

The fourth proportional to 365,999.90, 548,999.85 and 259,711.70 is: 389,567.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,999.90 : 548,999.85 = 259,711.70 : x
  2. Step 2: Convert to fraction form
    365,999.90/548,999.85 = 259,711.70/x
  3. Step 3: Cross multiply
    365,999.90x = 548,999.85 × 259,711.70
  4. Step 4: Simplify right side
    365,999.90x = 142,581,684,343.25
  5. Step 5: Solve for x
    x = 142,581,684,343.25/365,999.90
  6. Step 6: Final answer
    x = 389,567.55

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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.