Home / 320,812.74-481,121.91-133,780.50

Finding the Fourth Proportional to 320,812.74, 481,121.91 and 133,780.50

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Solution

The fourth proportional to 320,812.74, 481,121.91 and 133,780.50 is: 200,630.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,812.74 : 481,121.91 = 133,780.50 : x
  2. Step 2: Convert to fraction form
    320,812.74/481,121.91 = 133,780.50/x
  3. Step 3: Cross multiply
    320,812.74x = 481,121.91 × 133,780.50
  4. Step 4: Simplify right side
    320,812.74x = 64,364,729,680.76
  5. Step 5: Solve for x
    x = 64,364,729,680.76/320,812.74
  6. Step 6: Final answer
    x = 200,630.22

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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.