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Finding the Fourth Proportional to 223,869.60, 335,512.80 and 90,640.80

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Solution

The fourth proportional to 223,869.60, 335,512.80 and 90,640.80 is: 135,843.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,869.60 : 335,512.80 = 90,640.80 : x
  2. Step 2: Convert to fraction form
    223,869.60/335,512.80 = 90,640.80/x
  3. Step 3: Cross multiply
    223,869.60x = 335,512.80 × 90,640.80
  4. Step 4: Simplify right side
    223,869.60x = 30,411,148,602.24
  5. Step 5: Solve for x
    x = 30,411,148,602.24/223,869.60
  6. Step 6: Final answer
    x = 135,843.14

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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.