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Finding the Fourth Proportional to 228,414.78, 342,622.17 and 70,644.60

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Solution

The fourth proportional to 228,414.78, 342,622.17 and 70,644.60 is: 105,966.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,414.78 : 342,622.17 = 70,644.60 : x
  2. Step 2: Convert to fraction form
    228,414.78/342,622.17 = 70,644.60/x
  3. Step 3: Cross multiply
    228,414.78x = 342,622.17 × 70,644.60
  4. Step 4: Simplify right side
    228,414.78x = 24,204,406,150.78
  5. Step 5: Solve for x
    x = 24,204,406,150.78/228,414.78
  6. Step 6: Final answer
    x = 105,966.90

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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.