Home / 320,443.85-480,624.06-83,804.78

Finding the Fourth Proportional to 320,443.85, 480,624.06 and 83,804.78

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Solution

The fourth proportional to 320,443.85, 480,624.06 and 83,804.78 is: 125,696.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,443.85 : 480,624.06 = 83,804.78 : x
  2. Step 2: Convert to fraction form
    320,443.85/480,624.06 = 83,804.78/x
  3. Step 3: Cross multiply
    320,443.85x = 480,624.06 × 83,804.78
  4. Step 4: Simplify right side
    320,443.85x = 40,278,593,611.01
  5. Step 5: Solve for x
    x = 40,278,593,611.01/320,443.85
  6. Step 6: Final answer
    x = 125,696.26

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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.