Home / 336,933.72-505,103.04-137,421

Finding the Fourth Proportional to 336,933.72, 505,103.04 and 137,421

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Solution

The fourth proportional to 336,933.72, 505,103.04 and 137,421 is: 206,010.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    336,933.72 : 505,103.04 = 137,421 : x
  2. Step 2: Convert to fraction form
    336,933.72/505,103.04 = 137,421/x
  3. Step 3: Cross multiply
    336,933.72x = 505,103.04 × 137,421
  4. Step 4: Simplify right side
    336,933.72x = 69,411,764,859.84
  5. Step 5: Solve for x
    x = 69,411,764,859.84/336,933.72
  6. Step 6: Final answer
    x = 206,010.15

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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.