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Finding the Fourth Proportional to 152,420.70, 228,760.65 and 68,310.30

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Solution

The fourth proportional to 152,420.70, 228,760.65 and 68,310.30 is: 102,523.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,420.70 : 228,760.65 = 68,310.30 : x
  2. Step 2: Convert to fraction form
    152,420.70/228,760.65 = 68,310.30/x
  3. Step 3: Cross multiply
    152,420.70x = 228,760.65 × 68,310.30
  4. Step 4: Simplify right side
    152,420.70x = 15,626,708,629.70
  5. Step 5: Solve for x
    x = 15,626,708,629.70/152,420.70
  6. Step 6: Final answer
    x = 102,523.53

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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.