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Finding the Fourth Proportional to 351,999.80, 527,999.70 and 331,263.80

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Solution

The fourth proportional to 351,999.80, 527,999.70 and 331,263.80 is: 496,895.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,999.80 : 527,999.70 = 331,263.80 : x
  2. Step 2: Convert to fraction form
    351,999.80/527,999.70 = 331,263.80/x
  3. Step 3: Cross multiply
    351,999.80x = 527,999.70 × 331,263.80
  4. Step 4: Simplify right side
    351,999.80x = 174,907,187,020.86
  5. Step 5: Solve for x
    x = 174,907,187,020.86/351,999.80
  6. Step 6: Final answer
    x = 496,895.70

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1.5x scale

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.