Home / 421,124.13-581,084.37-239,839.56

Finding the Fourth Proportional to 421,124.13, 581,084.37 and 239,839.56

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Solution

The fourth proportional to 421,124.13, 581,084.37 and 239,839.56 is: 330,940.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,124.13 : 581,084.37 = 239,839.56 : x
  2. Step 2: Convert to fraction form
    421,124.13/581,084.37 = 239,839.56/x
  3. Step 3: Cross multiply
    421,124.13x = 581,084.37 × 239,839.56
  4. Step 4: Simplify right side
    421,124.13x = 139,367,019,623.68
  5. Step 5: Solve for x
    x = 139,367,019,623.68/421,124.13
  6. Step 6: Final answer
    x = 330,940.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.