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Finding the Fourth Proportional to 260,036.10, 389,190.15 and 188,756.10

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Solution

The fourth proportional to 260,036.10, 389,190.15 and 188,756.10 is: 282,506.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,036.10 : 389,190.15 = 188,756.10 : x
  2. Step 2: Convert to fraction form
    260,036.10/389,190.15 = 188,756.10/x
  3. Step 3: Cross multiply
    260,036.10x = 389,190.15 × 188,756.10
  4. Step 4: Simplify right side
    260,036.10x = 73,462,014,872.42
  5. Step 5: Solve for x
    x = 73,462,014,872.42/260,036.10
  6. Step 6: Final answer
    x = 282,506.99

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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.