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Finding the Fourth Proportional to 260,109.10, 390,163.65 and 201,060.10

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Solution

The fourth proportional to 260,109.10, 390,163.65 and 201,060.10 is: 301,590.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,109.10 : 390,163.65 = 201,060.10 : x
  2. Step 2: Convert to fraction form
    260,109.10/390,163.65 = 201,060.10/x
  3. Step 3: Cross multiply
    260,109.10x = 390,163.65 × 201,060.10
  4. Step 4: Simplify right side
    260,109.10x = 78,446,342,485.37
  5. Step 5: Solve for x
    x = 78,446,342,485.37/260,109.10
  6. Step 6: Final answer
    x = 301,590.15

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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.