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Finding the Fourth Proportional to 270,649.60, 405,801.60 and 112,940.80

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Solution

The fourth proportional to 270,649.60, 405,801.60 and 112,940.80 is: 169,339.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,649.60 : 405,801.60 = 112,940.80 : x
  2. Step 2: Convert to fraction form
    270,649.60/405,801.60 = 112,940.80/x
  3. Step 3: Cross multiply
    270,649.60x = 405,801.60 × 112,940.80
  4. Step 4: Simplify right side
    270,649.60x = 45,831,557,345.28
  5. Step 5: Solve for x
    x = 45,831,557,345.28/270,649.60
  6. Step 6: Final answer
    x = 169,339.09

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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.