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Finding the Fourth Proportional to 351,452.40, 527,173.80 and 85,215.12

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Solution

The fourth proportional to 351,452.40, 527,173.80 and 85,215.12 is: 127,821.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,452.40 : 527,173.80 = 85,215.12 : x
  2. Step 2: Convert to fraction form
    351,452.40/527,173.80 = 85,215.12/x
  3. Step 3: Cross multiply
    351,452.40x = 527,173.80 × 85,215.12
  4. Step 4: Simplify right side
    351,452.40x = 44,923,178,627.86
  5. Step 5: Solve for x
    x = 44,923,178,627.86/351,452.40
  6. Step 6: Final answer
    x = 127,821.52

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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.