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Finding the Fourth Proportional to 400,660.56, 600,990.88 and 101,159.12

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Solution

The fourth proportional to 400,660.56, 600,990.88 and 101,159.12 is: 151,738.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,660.56 : 600,990.88 = 101,159.12 : x
  2. Step 2: Convert to fraction form
    400,660.56/600,990.88 = 101,159.12/x
  3. Step 3: Cross multiply
    400,660.56x = 600,990.88 × 101,159.12
  4. Step 4: Simplify right side
    400,660.56x = 60,795,708,548.83
  5. Step 5: Solve for x
    x = 60,795,708,548.83/400,660.56
  6. Step 6: Final answer
    x = 151,738.69

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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.