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Finding the Fourth Proportional to 428,281.66, 591,028.41 and 246,990.97

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Solution

The fourth proportional to 428,281.66, 591,028.41 and 246,990.97 is: 340,847.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,281.66 : 591,028.41 = 246,990.97 : x
  2. Step 2: Convert to fraction form
    428,281.66/591,028.41 = 246,990.97/x
  3. Step 3: Cross multiply
    428,281.66x = 591,028.41 × 246,990.97
  4. Step 4: Simplify right side
    428,281.66x = 145,978,680,283.46
  5. Step 5: Solve for x
    x = 145,978,680,283.46/428,281.66
  6. Step 6: Final answer
    x = 340,847.38

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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.