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Finding the Fourth Proportional to 260,771.10, 390,865.05 and 148,505.10

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Solution

The fourth proportional to 260,771.10, 390,865.05 and 148,505.10 is: 222,591.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,771.10 : 390,865.05 = 148,505.10 : x
  2. Step 2: Convert to fraction form
    260,771.10/390,865.05 = 148,505.10/x
  3. Step 3: Cross multiply
    260,771.10x = 390,865.05 × 148,505.10
  4. Step 4: Simplify right side
    260,771.10x = 58,045,453,336.76
  5. Step 5: Solve for x
    x = 58,045,453,336.76/260,771.10
  6. Step 6: Final answer
    x = 222,591.59

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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.