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Finding the Fourth Proportional to 261,391.80, 391,050.90 and 226,716.60

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Solution

The fourth proportional to 261,391.80, 391,050.90 and 226,716.60 is: 339,175.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,391.80 : 391,050.90 = 226,716.60 : x
  2. Step 2: Convert to fraction form
    261,391.80/391,050.90 = 226,716.60/x
  3. Step 3: Cross multiply
    261,391.80x = 391,050.90 × 226,716.60
  4. Step 4: Simplify right side
    261,391.80x = 88,657,730,474.94
  5. Step 5: Solve for x
    x = 88,657,730,474.94/261,391.80
  6. Step 6: Final answer
    x = 339,175.64

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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.