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Finding the Fourth Proportional to 228,869.20, 342,612.60 and 201,221.20

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Solution

The fourth proportional to 228,869.20, 342,612.60 and 201,221.20 is: 301,224.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,869.20 : 342,612.60 = 201,221.20 : x
  2. Step 2: Convert to fraction form
    228,869.20/342,612.60 = 201,221.20/x
  3. Step 3: Cross multiply
    228,869.20x = 342,612.60 × 201,221.20
  4. Step 4: Simplify right side
    228,869.20x = 68,940,918,507.12
  5. Step 5: Solve for x
    x = 68,940,918,507.12/228,869.20
  6. Step 6: Final answer
    x = 301,224.10

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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.