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Finding the Fourth Proportional to 330,765.66, 456,500.21 and 321,758.87

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Solution

The fourth proportional to 330,765.66, 456,500.21 and 321,758.87 is: 444,069.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,765.66 : 456,500.21 = 321,758.87 : x
  2. Step 2: Convert to fraction form
    330,765.66/456,500.21 = 321,758.87/x
  3. Step 3: Cross multiply
    330,765.66x = 456,500.21 × 321,758.87
  4. Step 4: Simplify right side
    330,765.66x = 146,882,987,833.07
  5. Step 5: Solve for x
    x = 146,882,987,833.07/330,765.66
  6. Step 6: Final answer
    x = 444,069.64

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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.