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Finding the Fourth Proportional to 320,435.60, 480,685.98 and 110,046.20

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Solution

The fourth proportional to 320,435.60, 480,685.98 and 110,046.20 is: 165,080.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,435.60 : 480,685.98 = 110,046.20 : x
  2. Step 2: Convert to fraction form
    320,435.60/480,685.98 = 110,046.20/x
  3. Step 3: Cross multiply
    320,435.60x = 480,685.98 × 110,046.20
  4. Step 4: Simplify right side
    320,435.60x = 52,897,665,492.28
  5. Step 5: Solve for x
    x = 52,897,665,492.28/320,435.60
  6. Step 6: Final answer
    x = 165,080.49

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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.