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Finding the Fourth Proportional to 330,970.40, 496,455.60 and 321,754.40

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Solution

The fourth proportional to 330,970.40, 496,455.60 and 321,754.40 is: 482,631.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,970.40 : 496,455.60 = 321,754.40 : x
  2. Step 2: Convert to fraction form
    330,970.40/496,455.60 = 321,754.40/x
  3. Step 3: Cross multiply
    330,970.40x = 496,455.60 × 321,754.40
  4. Step 4: Simplify right side
    330,970.40x = 159,736,773,704.64
  5. Step 5: Solve for x
    x = 159,736,773,704.64/330,970.40
  6. Step 6: Final answer
    x = 482,631.60

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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.