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Finding the Fourth Proportional to 330,935.20, 496,402.80 and 242,807.20

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Solution

The fourth proportional to 330,935.20, 496,402.80 and 242,807.20 is: 364,210.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,935.20 : 496,402.80 = 242,807.20 : x
  2. Step 2: Convert to fraction form
    330,935.20/496,402.80 = 242,807.20/x
  3. Step 3: Cross multiply
    330,935.20x = 496,402.80 × 242,807.20
  4. Step 4: Simplify right side
    330,935.20x = 120,530,173,940.16
  5. Step 5: Solve for x
    x = 120,530,173,940.16/330,935.20
  6. Step 6: Final answer
    x = 364,210.80

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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.