Home / 260,165.91-390,071.29-138,604.62

Finding the Fourth Proportional to 260,165.91, 390,071.29 and 138,604.62

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Solution

The fourth proportional to 260,165.91, 390,071.29 and 138,604.62 is: 207,812.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,165.91 : 390,071.29 = 138,604.62 : x
  2. Step 2: Convert to fraction form
    260,165.91/390,071.29 = 138,604.62/x
  3. Step 3: Cross multiply
    260,165.91x = 390,071.29 × 138,604.62
  4. Step 4: Simplify right side
    260,165.91x = 54,065,682,923.36
  5. Step 5: Solve for x
    x = 54,065,682,923.36/260,165.91
  6. Step 6: Final answer
    x = 207,812.33

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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.