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Finding the Fourth Proportional to 454,940.60, 682,386.28 and 139,398.44

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Solution

The fourth proportional to 454,940.60, 682,386.28 and 139,398.44 is: 209,090.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,940.60 : 682,386.28 = 139,398.44 : x
  2. Step 2: Convert to fraction form
    454,940.60/682,386.28 = 139,398.44/x
  3. Step 3: Cross multiply
    454,940.60x = 682,386.28 × 139,398.44
  4. Step 4: Simplify right side
    454,940.60x = 95,123,582,909.40
  5. Step 5: Solve for x
    x = 95,123,582,909.40/454,940.60
  6. Step 6: Final answer
    x = 209,090.12

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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.