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Finding the Fourth Proportional to 320,440.60, 480,619.14 and 83,801.53

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Solution

The fourth proportional to 320,440.60, 480,619.14 and 83,801.53 is: 125,691.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,440.60 : 480,619.14 = 83,801.53 : x
  2. Step 2: Convert to fraction form
    320,440.60/480,619.14 = 83,801.53/x
  3. Step 3: Cross multiply
    320,440.60x = 480,619.14 × 83,801.53
  4. Step 4: Simplify right side
    320,440.60x = 40,276,619,279.28
  5. Step 5: Solve for x
    x = 40,276,619,279.28/320,440.60
  6. Step 6: Final answer
    x = 125,691.37

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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.