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Finding the Fourth Proportional to 320,441.10, 480,619.89 and 83,802.03

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Solution

The fourth proportional to 320,441.10, 480,619.89 and 83,802.03 is: 125,692.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,441.10 : 480,619.89 = 83,802.03 : x
  2. Step 2: Convert to fraction form
    320,441.10/480,619.89 = 83,802.03/x
  3. Step 3: Cross multiply
    320,441.10x = 480,619.89 × 83,802.03
  4. Step 4: Simplify right side
    320,441.10x = 40,276,922,440.38
  5. Step 5: Solve for x
    x = 40,276,922,440.38/320,441.10
  6. Step 6: Final answer
    x = 125,692.12

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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.