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Finding the Fourth Proportional to 310,563.01, 428,592.36 and 189,684.73

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Solution

The fourth proportional to 310,563.01, 428,592.36 and 189,684.73 is: 261,774.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,563.01 : 428,592.36 = 189,684.73 : x
  2. Step 2: Convert to fraction form
    310,563.01/428,592.36 = 189,684.73/x
  3. Step 3: Cross multiply
    310,563.01x = 428,592.36 × 189,684.73
  4. Step 4: Simplify right side
    310,563.01x = 81,297,426,086.66
  5. Step 5: Solve for x
    x = 81,297,426,086.66/310,563.01
  6. Step 6: Final answer
    x = 261,774.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.