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Finding the Fourth Proportional to 220,296.04, 330,356.58 and 79,978.12

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Solution

The fourth proportional to 220,296.04, 330,356.58 and 79,978.12 is: 119,935.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,296.04 : 330,356.58 = 79,978.12 : x
  2. Step 2: Convert to fraction form
    220,296.04/330,356.58 = 79,978.12/x
  3. Step 3: Cross multiply
    220,296.04x = 330,356.58 × 79,978.12
  4. Step 4: Simplify right side
    220,296.04x = 26,421,298,198.03
  5. Step 5: Solve for x
    x = 26,421,298,198.03/220,296.04
  6. Step 6: Final answer
    x = 119,935.42

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1.5x scale

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.