Home / 320,441.85-480,621.06-83,802.78

Finding the Fourth Proportional to 320,441.85, 480,621.06 and 83,802.78

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Solution

The fourth proportional to 320,441.85, 480,621.06 and 83,802.78 is: 125,693.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,441.85 : 480,621.06 = 83,802.78 : x
  2. Step 2: Convert to fraction form
    320,441.85/480,621.06 = 83,802.78/x
  3. Step 3: Cross multiply
    320,441.85x = 480,621.06 × 83,802.78
  4. Step 4: Simplify right side
    320,441.85x = 40,277,380,954.55
  5. Step 5: Solve for x
    x = 40,277,380,954.55/320,441.85
  6. Step 6: Final answer
    x = 125,693.26

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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.