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Finding the Fourth Proportional to 225,293.76, 337,940.64 and 90,354.24

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Solution

The fourth proportional to 225,293.76, 337,940.64 and 90,354.24 is: 135,531.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,293.76 : 337,940.64 = 90,354.24 : x
  2. Step 2: Convert to fraction form
    225,293.76/337,940.64 = 90,354.24/x
  3. Step 3: Cross multiply
    225,293.76x = 337,940.64 × 90,354.24
  4. Step 4: Simplify right side
    225,293.76x = 30,534,369,692.31
  5. Step 5: Solve for x
    x = 30,534,369,692.31/225,293.76
  6. Step 6: Final answer
    x = 135,531.36

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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.